diff --git a/.changeset/large-melons-warn.md b/.changeset/large-melons-warn.md
new file mode 100644
index 000000000..6f7c8545c
--- /dev/null
+++ b/.changeset/large-melons-warn.md
@@ -0,0 +1,5 @@
+---
+'slate-react': minor
+---
+
+Fix CJK IME (e.g. Chinese or Japanese) double input
diff --git a/packages/slate-react/src/components/editable.tsx b/packages/slate-react/src/components/editable.tsx
index 22024bd76..2cdf472c9 100644
--- a/packages/slate-react/src/components/editable.tsx
+++ b/packages/slate-react/src/components/editable.tsx
@@ -24,6 +24,8 @@ import {
   IS_FIREFOX_LEGACY,
   IS_QQBROWSER,
   IS_SAFARI,
+  IS_UC_MOBILE,
+  IS_WECHATBROWSER,
   CAN_USE_DOM,
 } from '../utils/environment'
 import { ReactEditor } from '..'
@@ -772,6 +774,8 @@ export const Editable = (props: EditableProps) => {
                   !IS_FIREFOX_LEGACY &&
                   !IS_IOS &&
                   !IS_QQBROWSER &&
+                  !IS_WECHATBROWSER &&
+                  !IS_UC_MOBILE &&
                   event.data
                 ) {
                   Editor.insertText(editor, event.data)
diff --git a/packages/slate-react/src/utils/environment.ts b/packages/slate-react/src/utils/environment.ts
index 3dcbab9d2..f059fce3b 100644
--- a/packages/slate-react/src/utils/environment.ts
+++ b/packages/slate-react/src/utils/environment.ts
@@ -43,6 +43,14 @@ export const IS_FIREFOX_LEGACY =
 export const IS_QQBROWSER =
   typeof navigator !== 'undefined' && /.*QQBrowser/.test(navigator.userAgent)
 
+// UC mobile browser
+export const IS_UC_MOBILE =
+  typeof navigator !== 'undefined' && /.*UCBrowser/.test(navigator.userAgent)
+
+// Wechat browser
+export const IS_WECHATBROWSER =
+  typeof navigator !== 'undefined' && /.*Wechat/.test(navigator.userAgent)
+
 // Check if DOM is available as React does internally.
 // https://github.com/facebook/react/blob/master/packages/shared/ExecutionEnvironment.js
 export const CAN_USE_DOM = !!(