diff --git a/Packages/vChewing_LangModelAssembly/Sources/LangModelAssembly/LMInstantiator.swift b/Packages/vChewing_LangModelAssembly/Sources/LangModelAssembly/LMInstantiator.swift
index 609b8b7d..13902097 100644
--- a/Packages/vChewing_LangModelAssembly/Sources/LangModelAssembly/LMInstantiator.swift
+++ b/Packages/vChewing_LangModelAssembly/Sources/LangModelAssembly/LMInstantiator.swift
@@ -233,6 +233,11 @@ public extension vChewingLM {
       lmAssociates.valuesFor(pair: pair)
     }
 
+    public func queryReplacementValue(key: String) -> String? {
+      let result = lmReplacements.valuesFor(key: key)
+      return result.isEmpty ? nil : result
+    }
+
     /// 插入臨時資料。
     /// - Parameters:
     ///   - key: 索引鍵陣列。
diff --git a/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_HandleStates.swift b/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_HandleStates.swift
index fe0eafaa..c7d84276 100644
--- a/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_HandleStates.swift
+++ b/Packages/vChewing_MainAssembly/Sources/MainAssembly/SessionCtl_HandleStates.swift
@@ -129,8 +129,17 @@ public extension SessionCtl {
   /// 遞交組字區內容。
   /// 注意：必須在 IMK 的 commitComposition 函式當中也間接或者直接執行這個處理。
   private func commit(text: String) {
-    let text = text.trimmingCharacters(in: .newlines)
-    let buffer = ChineseConverter.kanjiConversionIfRequired(text)
+    let phE = PrefMgr.shared.phraseReplacementEnabled && text.count > 1
+    var text = text.trimmingCharacters(in: .newlines)
+    var replaced = false
+    if phE, let queried = inputHandler?.currentLM.queryReplacementValue(key: text) {
+      replaced = true
+      text = queried
+    }
+    var buffer = ChineseConverter.kanjiConversionIfRequired(text)
+    if phE, !replaced, let queried = inputHandler?.currentLM.queryReplacementValue(key: buffer) {
+      buffer = ChineseConverter.kanjiConversionIfRequired(queried)
+    }
     if isServingIMEItself {
       DispatchQueue.main.async {
         guard let client = self.client() else { return }