diff --git a/web/app/components/base/chat/chat-with-history/chat-wrapper.tsx b/web/app/components/base/chat/chat-with-history/chat-wrapper.tsx
index 8eda66c52a..b99555bc44 100644
--- a/web/app/components/base/chat/chat-with-history/chat-wrapper.tsx
+++ b/web/app/components/base/chat/chat-with-history/chat-wrapper.tsx
@@ -129,23 +129,27 @@ const ChatWrapper = () => {
   ])
 
   return (
-    <Chat
-      appData={appData}
-      config={appConfig}
-      chatList={chatList}
-      isResponding={isResponding}
-      chatContainerInnerClassName={`mx-auto pt-6 w-full max-w-[720px] ${isMobile && 'px-4'}`}
-      chatFooterClassName='pb-4'
-      chatFooterInnerClassName={`mx-auto w-full max-w-[720px] ${isMobile && 'px-4'}`}
-      onSend={doSend}
-      onStopResponding={handleStop}
-      chatNode={chatNode}
-      allToolIcons={appMeta?.tool_icons || {}}
-      onFeedback={handleFeedback}
-      suggestedQuestions={suggestedQuestions}
-      hideProcessDetail
-      themeBuilder={themeBuilder}
-    />
+    <div
+      className='h-full bg-chatbot-bg overflow-hidden'
+    >
+      <Chat
+        appData={appData}
+        config={appConfig}
+        chatList={chatList}
+        isResponding={isResponding}
+        chatContainerInnerClassName={`mx-auto pt-6 w-full max-w-[720px] ${isMobile && 'px-4'}`}
+        chatFooterClassName='pb-4'
+        chatFooterInnerClassName={`mx-auto w-full max-w-[720px] ${isMobile && 'px-4'}`}
+        onSend={doSend}
+        onStopResponding={handleStop}
+        chatNode={chatNode}
+        allToolIcons={appMeta?.tool_icons || {}}
+        onFeedback={handleFeedback}
+        suggestedQuestions={suggestedQuestions}
+        hideProcessDetail
+        themeBuilder={themeBuilder}
+      />
+    </div>
   )
 }
 
diff --git a/web/app/components/base/chat/chat/answer/agent-content.tsx b/web/app/components/base/chat/chat/answer/agent-content.tsx
index 7ac6fcf84e..6f0a603608 100644
--- a/web/app/components/base/chat/chat/answer/agent-content.tsx
+++ b/web/app/components/base/chat/chat/answer/agent-content.tsx
@@ -36,7 +36,7 @@ const AgentContent: FC<AgentContentProps> = ({
   return (
     <div>
       {agent_thoughts?.map((thought, index) => (
-        <div key={index}>
+        <div key={index} className='px-2 py-1'>
           {thought.thought && (
             <Markdown content={thought.thought} />
           )}
diff --git a/web/app/components/base/chat/chat/answer/basic-content.tsx b/web/app/components/base/chat/chat/answer/basic-content.tsx
index d438610f68..a9ca3e8630 100644
--- a/web/app/components/base/chat/chat/answer/basic-content.tsx
+++ b/web/app/components/base/chat/chat/answer/basic-content.tsx
@@ -2,6 +2,7 @@ import type { FC } from 'react'
 import { memo } from 'react'
 import type { ChatItem } from '../../types'
 import { Markdown } from '@/app/components/base/markdown'
+import cn from '@/utils/classnames'
 
 type BasicContentProps = {
   item: ChatItem
@@ -15,9 +16,17 @@ const BasicContent: FC<BasicContentProps> = ({
   } = item
 
   if (annotation?.logAnnotation)
-    return <Markdown content={annotation?.logAnnotation.content || ''} />
+    return <Markdown content={annotation?.logAnnotation.content || ''} className='px-2 py-1' />
 
-  return <Markdown content={content} className={`${item.isError && '!text-[#F04438]'}`} />
+  return (
+    <Markdown
+      className={cn(
+        'px-2 py-1',
+        item.isError && '!text-[#F04438]',
+      )}
+      content={content}
+    />
+  )
 }
 
 export default memo(BasicContent)
diff --git a/web/app/components/base/chat/chat/answer/index.tsx b/web/app/components/base/chat/chat/answer/index.tsx
index 78a0842595..49491efc3d 100644
--- a/web/app/components/base/chat/chat/answer/index.tsx
+++ b/web/app/components/base/chat/chat/answer/index.tsx
@@ -15,13 +15,13 @@ import BasicContent from './basic-content'
 import SuggestedQuestions from './suggested-questions'
 import More from './more'
 import WorkflowProcess from './workflow-process'
-import { AnswerTriangle } from '@/app/components/base/icons/src/vender/solid/general'
 import { MessageFast } from '@/app/components/base/icons/src/vender/solid/communication'
 import LoadingAnim from '@/app/components/base/chat/chat/loading-anim'
 import Citation from '@/app/components/base/chat/chat/citation'
 import { EditTitle } from '@/app/components/app/annotation/edit-annotation-modal/edit-item'
 import type { Emoji } from '@/app/components/tools/types'
 import type { AppData } from '@/models/share'
+import cn from '@/utils/classnames'
 
 type AnswerProps = {
   item: ChatItem
@@ -105,13 +105,12 @@ const Answer: FC<AnswerProps> = ({
       </div>
       <div className='chat-answer-container group grow w-0 ml-4' ref={containerRef}>
         <div className={`group relative pr-10 ${chatAnswerContainerInner}`}>
-          <AnswerTriangle className='absolute -left-2 top-0 w-2 h-3 text-gray-100' />
           <div
             ref={contentRef}
-            className={`
-              relative inline-block px-4 py-3 max-w-full bg-gray-100 rounded-b-2xl rounded-tr-2xl text-sm text-gray-900
-              ${workflowProcess && 'w-full'}
-            `}
+            className={cn(
+              'relative inline-block p-2 max-w-full bg-chat-bubble-bg rounded-2xl border-t border-t-divider-subtle text-sm text-gray-900',
+              workflowProcess && 'w-full',
+            )}
           >
             {annotation?.id && (
               <div
diff --git a/web/app/components/base/chat/chat/chat-input-area/index.tsx b/web/app/components/base/chat/chat/chat-input-area/index.tsx
index c4a7b7306c..c8de1d2b54 100644
--- a/web/app/components/base/chat/chat/chat-input-area/index.tsx
+++ b/web/app/components/base/chat/chat/chat-input-area/index.tsx
@@ -1,6 +1,7 @@
 import {
   memo,
   useCallback,
+  useRef,
   useState,
 } from 'react'
 import Textarea from 'rc-textarea'
@@ -15,7 +16,7 @@ import type { Theme } from '../../embedded-chatbot/theme/theme-context'
 import { useTextAreaHeight } from './hooks'
 import Operation from './operation'
 import cn from '@/utils/classnames'
-import { FileListFlexOperation } from '@/app/components/base/file-uploader'
+// import { FileListFlexOperation } from '@/app/components/base/file-uploader'
 import VoiceInput from '@/app/components/base/voice-input'
 import { useToastContext } from '@/app/components/base/toast'
 
@@ -41,9 +42,38 @@ const ChatInputArea = ({
     handleTextareaResize,
     isMultipleLine,
   } = useTextAreaHeight()
-  const [value, setValue] = useState('')
+  const [query, setQuery] = useState('')
+  const isUseInputMethod = useRef(false)
   const [showVoiceInput, setShowVoiceInput] = useState(false)
 
+  const handleSend = () => {
+    if (onSend) {
+      if (!query || !query.trim()) {
+        notify({ type: 'info', message: t('appAnnotation.errorMessage.queryRequired') })
+        return
+      }
+      onSend(query)
+      setQuery('')
+    }
+  }
+
+  const handleKeyUp = (e: React.KeyboardEvent<HTMLTextAreaElement>) => {
+    if (e.code === 'Enter') {
+      e.preventDefault()
+      // prevent send message when using input method enter
+      if (!e.shiftKey && !isUseInputMethod.current)
+        handleSend()
+    }
+  }
+
+  const handleKeyDown = (e: React.KeyboardEvent<HTMLTextAreaElement>) => {
+    isUseInputMethod.current = e.nativeEvent.isComposing
+    if (e.code === 'Enter' && !e.shiftKey) {
+      setQuery(query.replace(/\n$/, ''))
+      e.preventDefault()
+    }
+  }
+
   const handleShowVoiceInput = useCallback(() => {
     (Recorder as any).getPermission().then(() => {
       setShowVoiceInput(true)
@@ -63,11 +93,11 @@ const ChatInputArea = ({
   return (
     <div
       className={cn(
-        'py-[9px] bg-components-panel-bg-blur border border-blue-300 rounded-xl shadow-md',
+        'py-[9px] bg-components-panel-bg-blur border border-components-chat-input-border rounded-xl shadow-md',
       )}
     >
-      <div className='relative px-[9px] max-h-[158px] overflow-y-auto'>
-        <FileListFlexOperation />
+      <div className='relative px-[9px] max-h-[158px] overflow-x-hidden overflow-y-auto'>
+        {/* <FileListFlexOperation /> */}
         <div
           ref={wrapperRef}
           className='flex items-center justify-between'
@@ -77,7 +107,7 @@ const ChatInputArea = ({
               ref={textValueRef}
               className='absolute w-auto h-auto p-1 leading-6 body-lg-regular pointer-events-none whitespace-pre invisible'
             >
-              {value}
+              {query}
             </div>
             <Textarea
               ref={textareaRef}
@@ -85,11 +115,13 @@ const ChatInputArea = ({
               placeholder='Enter message...'
               autoSize={{ minRows: 1 }}
               onResize={handleTextareaResize}
-              value={value}
+              value={query}
               onChange={(e) => {
-                setValue(e.target.value)
+                setQuery(e.target.value)
                 handleTextareaResize()
               }}
+              onKeyUp={handleKeyUp}
+              onKeyDown={handleKeyDown}
             />
           </div>
           {
@@ -100,7 +132,7 @@ const ChatInputArea = ({
           showVoiceInput && (
             <VoiceInput
               onCancel={() => setShowVoiceInput(false)}
-              onConverted={text => setValue(text)}
+              onConverted={text => setQuery(text)}
             />
           )
         }
diff --git a/web/app/components/base/chat/chat/index.tsx b/web/app/components/base/chat/chat/index.tsx
index c5d9af45c2..4cd445cfec 100644
--- a/web/app/components/base/chat/chat/index.tsx
+++ b/web/app/components/base/chat/chat/index.tsx
@@ -21,7 +21,8 @@ import type {
 import type { ThemeBuilder } from '../embedded-chatbot/theme/theme-context'
 import Question from './question'
 import Answer from './answer'
-import ChatInput from './chat-input'
+// import ChatInput from './chat-input'
+import ChatInputArea from './chat-input-area'
 import TryToAsk from './try-to-ask'
 import { ChatContextProvider } from './context'
 import classNames from '@/utils/classnames'
@@ -261,7 +262,7 @@ const Chat: FC<ChatProps> = ({
                 />
               )
             }
-            {
+            {/* {
               !noChatInput && (
                 <ChatInput
                   visionConfig={config?.file_upload?.image}
@@ -270,6 +271,16 @@ const Chat: FC<ChatProps> = ({
                   theme={themeBuilder?.theme}
                 />
               )
+            } */}
+            {
+              !noChatInput && (
+                <ChatInputArea
+                  visionConfig={config?.file_upload?.image}
+                  speechToTextConfig={config?.speech_to_text}
+                  onSend={onSend}
+                  theme={themeBuilder?.theme}
+                />
+              )
             }
           </div>
         </div>
diff --git a/web/app/components/base/chat/chat/question.tsx b/web/app/components/base/chat/chat/question.tsx
index 3122857628..7ea9656a3e 100644
--- a/web/app/components/base/chat/chat/question.tsx
+++ b/web/app/components/base/chat/chat/question.tsx
@@ -8,7 +8,6 @@ import {
 import type { ChatItem } from '../types'
 import type { Theme } from '../embedded-chatbot/theme/theme-context'
 import { CssTransform } from '../embedded-chatbot/theme/utils'
-import { QuestionTriangle } from '@/app/components/base/icons/src/vender/solid/general'
 import { User } from '@/app/components/base/icons/src/public/avatar'
 import { Markdown } from '@/app/components/base/markdown'
 import ImageGallery from '@/app/components/base/image-gallery'
@@ -32,12 +31,8 @@ const Question: FC<QuestionProps> = ({
   return (
     <div className='flex justify-end mb-2 last:mb-0 pl-10'>
       <div className='group relative mr-4'>
-        <QuestionTriangle
-          className='absolute -right-2 top-0 w-2 h-3 text-[#D1E9FF]/50'
-          style={theme ? { color: theme.chatBubbleColor } : {}}
-        />
         <div
-          className='px-4 py-3 bg-[#D1E9FF]/50 rounded-b-2xl rounded-tl-2xl text-sm text-gray-900'
+          className='px-4 py-3 bg-util-colors-blue-brand-blue-brand-500 rounded-2xl text-sm text-gray-900'
           style={theme?.chatBubbleColorStyle ? CssTransform(theme.chatBubbleColorStyle) : {}}
         >
           {
diff --git a/web/tailwind.config.js b/web/tailwind.config.js
index ad62e74fa6..8e87ada90c 100644
--- a/web/tailwind.config.js
+++ b/web/tailwind.config.js
@@ -88,6 +88,10 @@ module.exports = {
       fontSize: {
         '2xs': '0.625rem',
       },
+      backgroundImage: {
+        'chatbot-bg': 'var(--color-chatbot-bg)',
+        'chat-bubble-bg': 'var(--color-chat-bubble-bg)',
+      },
     },
   },
   plugins: [
diff --git a/web/themes/dark.css b/web/themes/dark.css
index 75534b14ed..5093f5cc16 100644
--- a/web/themes/dark.css
+++ b/web/themes/dark.css
@@ -559,4 +559,7 @@ html[data-theme="dark"] {
 
   --color-third-party-LangChain: #FFFFFF;
   --color-third-party-Langfuse: #FFFFFF;
+
+  --color-chatbot-bg: linear-gradient(180deg, rgba(34, 34, 37, 0.90) 0%, rgba(29, 29, 32, 0.90) 90.48%);
+  --color-chat-bubble-bg: linear-gradient(180deg, rgba(200, 206, 218, 0.08) 0%, rgba(200, 206, 218, 0.02) 100%);
 }
\ No newline at end of file
diff --git a/web/themes/light.css b/web/themes/light.css
index 5dd39abf88..d7df5204e6 100644
--- a/web/themes/light.css
+++ b/web/themes/light.css
@@ -559,4 +559,7 @@ html[data-theme="light"] {
 
   --color-third-party-LangChain: #1C3C3C;
   --color-third-party-Langfuse: #000000;
+
+  --color-chatbot-bg: linear-gradient(180deg, rgba(249, 250, 251, 0.90) 0%, rgba(242, 244, 247, 0.90) 90.48%);
+  --color-chat-bubble-bg: linear-gradient(180deg, #FFF 0%, rgba(255, 255, 255, 0.60) 100%);
 }
\ No newline at end of file