diff --git a/backend/package.json b/backend/package.json
index a9abf7c..c2cb124 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.14.69",
+  "version": "2.14.70",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and ShadowRocket.",
   "main": "src/main.js",
   "scripts": {
diff --git a/backend/src/core/proxy-utils/parsers/peggy/surge.js b/backend/src/core/proxy-utils/parsers/peggy/surge.js
index 898b2cc..78bb5e8 100644
--- a/backend/src/core/proxy-utils/parsers/peggy/surge.js
+++ b/backend/src/core/proxy-utils/parsers/peggy/surge.js
@@ -76,10 +76,10 @@ snell = tag equals "snell" address (snell_version/snell_psk/obfs/obfs_host/obfs_
         $set(proxy, "obfs-opts.path", obfs.path);
     }
 }
-tuic = tag equals "tuic" address (alpn/token/ip_version/tls_verification/sni/fast_open/tfo/others)* {
+tuic = tag equals "tuic" address (alpn/token/ip_version/tls_verification/sni/fast_open/tfo/ecn/others)* {
     proxy.type = "tuic";
 }
-tuic_v5 = tag equals "tuic-v5" address (alpn/passwordk/uuidk/ip_version/tls_verification/sni/fast_open/tfo/others)* {
+tuic_v5 = tag equals "tuic-v5" address (alpn/passwordk/uuidk/ip_version/tls_verification/sni/fast_open/tfo/ecn/others)* {
     proxy.type = "tuic";
     proxy.version = 5;
 }
@@ -192,6 +192,7 @@ uri = $[^,]+
 udp_relay = comma "udp" equals flag:bool { proxy.udp = flag; }
 fast_open = comma "fast-open" equals flag:bool { proxy.tfo = flag; }
 reuse = comma "reuse" equals flag:bool { proxy.reuse = flag; }
+ecn = comma "ecn" equals flag:bool { proxy.ecn = flag; }
 tfo = comma "tfo" equals flag:bool { proxy.tfo = flag; }
 ip_version = comma "ip-version" equals match:[^,]+ { proxy["ip-version"] = match.join(""); }
 section_name = comma "section-name" equals match:[^,]+ { proxy["section-name"] = match.join(""); }
diff --git a/backend/src/core/proxy-utils/parsers/peggy/surge.peg b/backend/src/core/proxy-utils/parsers/peggy/surge.peg
index 75a1e3b..9b1edf7 100644
--- a/backend/src/core/proxy-utils/parsers/peggy/surge.peg
+++ b/backend/src/core/proxy-utils/parsers/peggy/surge.peg
@@ -74,10 +74,10 @@ snell = tag equals "snell" address (snell_version/snell_psk/obfs/obfs_host/obfs_
         $set(proxy, "obfs-opts.path", obfs.path);
     }
 }
-tuic = tag equals "tuic" address (alpn/token/ip_version/tls_verification/sni/fast_open/tfo/others)* {
+tuic = tag equals "tuic" address (alpn/token/ip_version/tls_verification/sni/fast_open/tfo/ecn/others)* {
     proxy.type = "tuic";
 }
-tuic_v5 = tag equals "tuic-v5" address (alpn/passwordk/uuidk/ip_version/tls_verification/sni/fast_open/tfo/others)* {
+tuic_v5 = tag equals "tuic-v5" address (alpn/passwordk/uuidk/ip_version/tls_verification/sni/fast_open/tfo/ecn/others)* {
     proxy.type = "tuic";
     proxy.version = 5;
 }
@@ -190,6 +190,7 @@ uri = $[^,]+
 udp_relay = comma "udp" equals flag:bool { proxy.udp = flag; }
 fast_open = comma "fast-open" equals flag:bool { proxy.tfo = flag; }
 reuse = comma "reuse" equals flag:bool { proxy.reuse = flag; }
+ecn = comma "ecn" equals flag:bool { proxy.ecn = flag; }
 tfo = comma "tfo" equals flag:bool { proxy.tfo = flag; }
 ip_version = comma "ip-version" equals match:[^,]+ { proxy["ip-version"] = match.join(""); }
 section_name = comma "section-name" equals match:[^,]+ { proxy["section-name"] = match.join(""); }
diff --git a/backend/src/core/proxy-utils/producers/surge.js b/backend/src/core/proxy-utils/producers/surge.js
index a294d05..966d508 100644
--- a/backend/src/core/proxy-utils/producers/surge.js
+++ b/backend/src/core/proxy-utils/producers/surge.js
@@ -332,6 +332,8 @@ function tuic(proxy) {
         'underlying-proxy',
     );
 
+    result.appendIfPresent(`,ecn=${proxy.ecn}`, 'ecn');
+
     return result.toString();
 }