diff --git a/app/src/main/java/com/example/shiftalarm/FragmentSettingsLab.kt b/app/src/main/java/com/example/shiftalarm/FragmentSettingsLab.kt
index 9af5596..67942b8 100644
--- a/app/src/main/java/com/example/shiftalarm/FragmentSettingsLab.kt
+++ b/app/src/main/java/com/example/shiftalarm/FragmentSettingsLab.kt
@@ -4,16 +4,19 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.AdapterView
 import android.widget.ArrayAdapter
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.lifecycleScope
 import com.example.shiftalarm.databinding.FragmentSettingsLabBinding
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.delay
 
 class FragmentSettingsLab : Fragment() {
 
     private var _binding: FragmentSettingsLabBinding? = null
     private val binding get() = _binding!!
+    private var isInitialLoad = true
 
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?,
@@ -28,7 +31,6 @@ class FragmentSettingsLab : Fragment() {
         
         setupSpinner()
         loadAnnualLeave()
-        setupSaveButton()
     }
 
     private fun setupSpinner() {
@@ -37,10 +39,25 @@ class FragmentSettingsLab : Fragment() {
         val adapter = ArrayAdapter(requireContext(), android.R.layout.simple_spinner_item, daysList)
         adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
         binding.spinnerTotalDays.adapter = adapter
+        
+        // 선택 시 자동 저장
+        binding.spinnerTotalDays.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
+            override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
+                if (!isInitialLoad) {
+                    val totalDays = position + 1 // 0-indexed to actual days
+                    saveAnnualLeave(totalDays)
+                }
+            }
+            
+            override fun onNothingSelected(parent: AdapterView<*>?) {
+                // Do nothing
+            }
+        }
     }
 
     private fun loadAnnualLeave() {
         lifecycleScope.launch {
+            isInitialLoad = true
             val repo = ShiftRepository(requireContext())
             
             val annualLeave = repo.getAnnualLeave()
@@ -53,24 +70,23 @@ class FragmentSettingsLab : Fragment() {
                 binding.spinnerTotalDays.setSelection(14)
                 binding.tvRemainingDays.text = "15"
             }
+            
+            // 초기 로드 완료 후 플래그 변경 (약간의 딜레이로 초기 선택 이벤트 방지)
+            delay(300)
+            isInitialLoad = false
         }
     }
 
-    private fun setupSaveButton() {
-        binding.btnSaveAnnualLeave.setOnClickListener {
-            val selectedPosition = binding.spinnerTotalDays.selectedItemPosition
-            val totalDays = selectedPosition + 1 // 0-indexed to actual days
+    private fun saveAnnualLeave(totalDays: Int) {
+        lifecycleScope.launch {
+            val repo = ShiftRepository(requireContext())
             
-            lifecycleScope.launch {
-                val repo = ShiftRepository(requireContext())
-                
-                repo.recalculateAndSaveAnnualLeave(totalDays.toFloat())
-                
-                val updated = repo.getAnnualLeave()
-                updated?.let {
-                    binding.tvRemainingDays.text = formatRemainingDays(it.remainingDays)
-                    showCustomToast(requireContext(), "총 연차 ${totalDays}일로 저장되었습니다 (남은 연차: ${formatRemainingDays(it.remainingDays)}일)")
-                }
+            repo.recalculateAndSaveAnnualLeave(totalDays.toFloat())
+            
+            val updated = repo.getAnnualLeave()
+            updated?.let {
+                binding.tvRemainingDays.text = formatRemainingDays(it.remainingDays)
+                showCustomToast(requireContext(), "총 연차 ${totalDays}일로 저장되었습니다 (남은 연차: ${formatRemainingDays(it.remainingDays)}일)")
             }
         }
     }
diff --git a/app/src/main/res/layout/fragment_settings_lab.xml b/app/src/main/res/layout/fragment_settings_lab.xml
index edd2c2a..b9a054f 100644
--- a/app/src/main/res/layout/fragment_settings_lab.xml
+++ b/app/src/main/res/layout/fragment_settings_lab.xml
@@ -15,13 +15,13 @@
         android:textSize="18sp"
         android:textStyle="bold"
         android:textColor="@color/text_primary"
-        android:layout_marginBottom="16dp"/>
+        android:layout_marginBottom="24dp"/>
 
     <!-- Total Annual Leave Setting -->
     <androidx.cardview.widget.CardView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="12dp"
+        android:layout_marginBottom="16dp"
         app:cardCornerRadius="12dp"
         app:cardElevation="2dp"
         app:cardBackgroundColor="@color/surface">
@@ -30,7 +30,7 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:orientation="horizontal"
-            android:padding="12dp"
+            android:padding="16dp"
             android:gravity="center_vertical">
 
             <TextView
@@ -51,9 +51,6 @@
                     android:id="@+id/spinnerTotalDays"
                     android:layout_width="80dp"
                     android:layout_height="48dp"/>
-                    android:id="@+id/npTotalDays"
-                    android:layout_width="60dp"
-                    android:layout_height="100dp"/>
 
                 <TextView
                     android:layout_width="wrap_content"
@@ -70,7 +67,7 @@
     <androidx.cardview.widget.CardView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="12dp"
+        android:layout_marginBottom="16dp"
         app:cardCornerRadius="12dp"
         app:cardElevation="2dp"
         app:cardBackgroundColor="@color/surface">
@@ -79,7 +76,7 @@
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:orientation="horizontal"
-            android:padding="12dp"
+            android:padding="16dp"
             android:gravity="center_vertical">
 
             <TextView
@@ -116,16 +113,6 @@
         </LinearLayout>
     </androidx.cardview.widget.CardView>
 
-    <!-- Calculation Info -->
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="※ 연차: -1일 / 반년: -0.5일 차감"
-        android:textSize="12sp"
-        android:textColor="@color/text_tertiary"
-        android:layout_marginBottom="8dp"
-        android:gravity="center"/>
-
     <!-- Calculation Info -->
     <TextView
         android:layout_width="wrap_content"
@@ -136,15 +123,4 @@
         android:layout_marginBottom="24dp"
         android:gravity="center"/>
 
-    <!-- Save Button -->
-    <com.google.android.material.button.MaterialButton
-        android:id="@+id/btnSaveAnnualLeave"
-        android:layout_width="match_parent"
-        android:layout_height="56dp"
-        android:text="저장"
-        android:textSize="16sp"
-        android:textStyle="bold"
-        app:cornerRadius="12dp"
-        android:backgroundTint="@color/primary"/>
-
 </LinearLayout>
diff --git a/version.json b/version.json
index 60f2160..5eee115 100644
--- a/version.json
+++ b/version.json
@@ -1,7 +1,7 @@
 {
-  "versionCode": 1145,
-  "versionName": "1.4.5",
-  "apkUrl": "https://git.webpluss.net/attachments/aeb7b079-f81b-4c77-b8ee-b8fde90a530e",
-  "changelog": "v1.4.5: 연차 최초적용 수정, 휴가관리 Spinner 변경, 동그라미 크기 확대",
+  "versionCode": 1146,
+  "versionName": "1.4.6",
+  "apkUrl": "https://git.webpluss.net/attachments/94d91eff-db0f-44af-b043-b03918cba243",
+  "changelog": "v1.4.6: 휴가관리 중복 텍스트 제거, 자동 저장 기능 추가",
   "forceUpdate": false
 }