diff --git a/regexes.yaml b/regexes.yaml
index eca82c79..96f6a9ff 100644
--- a/regexes.yaml
+++ b/regexes.yaml
@@ -511,6 +511,11 @@ user_agent_parsers:
   # HiBrowser
   - regex: '(HiBrowser)\/v(\d+)\.(\d+)\.(\d+)\.(\d+)'
 
+  # Kwai
+  # must before Chrome Mobile WebView
+  - regex: '(Kwai|ksNebula|Merchantshop)\/(\d+)\.(\d+)\.(\d+)\.(\d+)'
+    family_replacement: 'Kwai'
+
   # Chrome Mobile
   - regex: 'Version/.{1,300}(Chrome)/(\d+)\.(\d+)\.(\d+)\.(\d+)'
     family_replacement: 'Chrome Mobile WebView'
diff --git a/tests/test_ua.yaml b/tests/test_ua.yaml
index 99b5ca48..362821ea 100644
--- a/tests/test_ua.yaml
+++ b/tests/test_ua.yaml
@@ -337,6 +337,34 @@ test_cases:
     minor: '10'
     patch: '1'
 
+  - user_agent_string: 'Mozilla/5.0 (iPhone; CPU iPhone OS 18_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Kwai/13.3.30.9227 ISLP/0 StatusHT/62 KDT/PHONE iosSCH/0 TitleHT/44 NetType/WIFI ISDM/0 ICFO/0 locale/zh-Hans CT/0 Yoda/3.1.3 ISLB/0 CoIS/0 ISLM/0 WebViewType/WK BHT/102 AZPREFIX/az4'
+    family: 'Kwai'
+    major: '13'
+    minor: '3'
+    patch: '30'
+    patch_minor: '9227'
+
+  - user_agent_string: 'Mozilla/5.0 (Linux; Android 12; BRT-W09 Build/HONORBRT-W09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.105 Safari/537.36 Yoda/3.2.13-rc4 Kwai/13.3.30.41464 OS_PRO_BIT/64 MAX_PHY_MEM/7851 KDT/PAD AZPREFIX/az2 ICFO/0 StatusHT/24 TitleHT/44 NetType/WIFI ISLP/0 ISDM/0 ISLB/0 locale/zh-cn SHP/2560 SWP/1600 SD/2.5 CT/0 ISLM/0'
+    family: 'Kwai'
+    major: '13'
+    minor: '3'
+    patch: '30'
+    patch_minor: '41464'
+
+  - user_agent_string: 'Mozilla/5.0 (iPhone; CPU iPhone OS 17_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 ksNebula/13.2.30.3824 ISLP/0 StatusHT/48 KDT/PHONE iosSCH/0 TitleHT/44 NetType/WIFI ISDM/0 ICFO/0 locale/zh-Hans CT/0 Yoda/3.1.1 ISLB/0 CoIS/0 ISLM/0 WebViewType/WK BHT/68 AZPREFIX/az4'
+    family: 'Kwai'
+    major: '13'
+    minor: '2'
+    patch: '30'
+    patch_minor: '3824'
+
+  - user_agent_string: 'Mozilla/5.0 (iPhone; CPU iPhone OS 18_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 Merchantshop/6.3.30.1218 PGID/0447B97E-93D4-4489-B529-881C01F0C0F5 Yoda/2.10.4.5.stable6 StatusHT/54 NetType/WIFI TitleHT/44 WebViewType/WK'
+    family: 'Kwai'
+    major: '6'
+    minor: '3'
+    patch: '30'
+    patch_minor: '1218'
+
   - user_agent_string: 'Mozilla/5.0 (Linux; Android 9; Pixel 2 XL Build/PPP5.180610.010; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.85 Mobile Safari/537.36'
     family: 'Chrome Mobile WebView'
     major: '68'