diff --git a/app/src/main/java/com/example/defenseapplication/liveVideo/LinkedUserActivity.kt b/app/src/main/java/com/example/defenseapplication/liveVideo/LinkedUserActivity.kt
index c53646d..6d0c76d 100644
--- a/app/src/main/java/com/example/defenseapplication/liveVideo/LinkedUserActivity.kt
+++ b/app/src/main/java/com/example/defenseapplication/liveVideo/LinkedUserActivity.kt
@@ -2,6 +2,8 @@ package com.example.defenseapplication.liveVideo
 
 import android.content.Intent
 import android.os.Bundle
+import android.text.Editable
+import android.text.TextWatcher
 import android.util.TypedValue
 import android.view.View
 import android.widget.Toast
@@ -30,6 +32,7 @@ class LinkedUserActivity : AppCompatActivity() {
 
     private lateinit var binding: LinkedUserActivityBinding
     private lateinit var adapter: LinkedUserAdapter
+    private val fullUserList = mutableListOf<LinkedUser>()
     private val userList = mutableListOf<LinkedUser>()
     private var mode: Int = MODE_SETTINGS
 
@@ -317,9 +320,9 @@ class LinkedUserActivity : AppCompatActivity() {
     }
 
     private fun updateDeviceUserList(deviceUserList: List<DeviceUserBean>) {
-        userList.clear()
+        fullUserList.clear()
         deviceUserList.forEach { deviceUser ->
-            userList.add(
+            fullUserList.add(
                 LinkedUser(
                     userId = deviceUser.userId ?: "",
                     name = deviceUser.nickName ?: "未知用户",
@@ -329,13 +332,13 @@ class LinkedUserActivity : AppCompatActivity() {
                 )
             )
         }
-        adapter.submitList(userList)
+        filterUsers(binding.etSearch.text?.toString() ?: "")
     }
 
     private fun updateFamilyMembersList(familyMembersList: List<FamilyMembersBean>) {
-        userList.clear()
+        fullUserList.clear()
         familyMembersList.forEach { member ->
-            userList.add(
+            fullUserList.add(
                 LinkedUser(
                     userId = member.userId ?: "",
                     name = member.nickName ?: member.parentName ?: "未知用户",
@@ -345,6 +348,20 @@ class LinkedUserActivity : AppCompatActivity() {
                 )
             )
         }
+        filterUsers(binding.etSearch.text?.toString() ?: "")
+    }
+
+    private fun filterUsers(keyword: String) {
+        userList.clear()
+        if (keyword.isEmpty()) {
+            userList.addAll(fullUserList)
+        } else {
+            val lowerKeyword = keyword.lowercase()
+            fullUserList.filter {
+                it.name.lowercase().contains(lowerKeyword) ||
+                it.phone.contains(keyword)
+            }.forEach { userList.add(it) }
+        }
         adapter.submitList(userList)
     }
 
@@ -353,9 +370,13 @@ class LinkedUserActivity : AppCompatActivity() {
             finish()
         }
 
-        binding.searchLayout.setOnClickListener {
-
-        }
+        binding.etSearch.addTextChangedListener(object : TextWatcher {
+            override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {}
+            override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {}
+            override fun afterTextChanged(s: Editable?) {
+                filterUsers(s?.toString() ?: "")
+            }
+        })
 
         binding.btnAddLinkedUser.setOnClickListener {
             val intent = Intent(this, AddLinkedUserActivity::class.java)
diff --git a/app/src/main/res/layout/linked_user_activity.xml b/app/src/main/res/layout/linked_user_activity.xml
index 8c092b5..c400d26 100644
--- a/app/src/main/res/layout/linked_user_activity.xml
+++ b/app/src/main/res/layout/linked_user_activity.xml
@@ -58,12 +58,18 @@
                 android:src="@drawable/search"
                 android:layout_marginRight="8dp"/>
 
-            <TextView
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/search_preset_text"
-                android:textColor="@color/gray"
-                android:textSize="14sp"/>
+            <EditText
+                android:id="@+id/etSearch"
+                android:layout_width="match_parent"
+                android:layout_height="40dp"
+                android:background="@null"
+                android:hint="@string/search_preset_text"
+                android:textColorHint="@color/gray"
+                android:textColor="@color/black"
+                android:textSize="14sp"
+                android:inputType="text"
+                android:imeOptions="actionSearch"
+                android:singleLine="true"/>
         </LinearLayout>
     </LinearLayout>
     <!-- 列表区域 -->