diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index f51aae814..b8920df5c 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -59,6 +59,7 @@
             android:name=".presentation.ui.joingroup.JoinGroupCodeActivity"
             android:exported="false"
             android:screenOrientation="portrait"
+            android:windowSoftInputMode="adjustPan"
             tools:ignore="LockedOrientationActivity" />
         <activity
             android:name=".presentation.ui.joingroup.JoinGroupSearchActivity"
diff --git a/app/src/main/java/org/sopt/pingle/presentation/ui/plan/PlanActivity.kt b/app/src/main/java/org/sopt/pingle/presentation/ui/plan/PlanActivity.kt
index 79d70c7d6..b7997a59f 100644
--- a/app/src/main/java/org/sopt/pingle/presentation/ui/plan/PlanActivity.kt
+++ b/app/src/main/java/org/sopt/pingle/presentation/ui/plan/PlanActivity.kt
@@ -82,13 +82,8 @@ class PlanActivity : BindingActivity<ActivityPlanBinding>(R.layout.activity_plan
     private fun addListeners() {
         binding.btnPlan.setOnClickListener {
             when (binding.vpPlan.currentItem) {
-                fragmentList.size - SUB_LIST_SIZE -> {
-                    planViewModel.postPlanMeeting()
-                }
-
-                else -> {
-                    binding.vpPlan.currentItem++
-                }
+                fragmentList.size - SUB_LIST_SIZE -> planViewModel.postPlanMeeting()
+                else -> binding.vpPlan.currentItem++
             }
         }
         binding.toolbar.ivAllTopbarArrowWithTitleArrowLeft.setOnClickListener {
@@ -136,13 +131,8 @@ class PlanActivity : BindingActivity<ActivityPlanBinding>(R.layout.activity_plan
 
     private fun navigateToPreviousPage() {
         when (binding.vpPlan.currentItem) {
-            FIRST_PAGE -> {
-                navigateToPlanAnnouncement()
-            }
-
-            else -> {
-                binding.vpPlan.currentItem--
-            }
+            FIRST_PAGE -> navigateToPlanAnnouncement()
+            else -> binding.vpPlan.currentItem--
         }
     }
 
diff --git a/app/src/main/java/org/sopt/pingle/presentation/ui/plan/PlanViewModel.kt b/app/src/main/java/org/sopt/pingle/presentation/ui/plan/PlanViewModel.kt
index 983f57817..a9447cef9 100644
--- a/app/src/main/java/org/sopt/pingle/presentation/ui/plan/PlanViewModel.kt
+++ b/app/src/main/java/org/sopt/pingle/presentation/ui/plan/PlanViewModel.kt
@@ -97,9 +97,8 @@ class PlanViewModel @Inject constructor(
                 (currentPage == PlanType.DATETIME.position && planDate.isNotBlank() && startTime.isNotBlank() && endTime.isNotBlank()) ||
                 (currentPage == PlanType.LOCATION.position && selectedLocation != null) ||
                 (
-                    currentPage == PlanType.RECRUITMENT.position && selectedRecruitment.isNotBlank() && checkRecruitment(
-                        selectedRecruitment
-                    )
+                    currentPage == PlanType.RECRUITMENT.position && selectedRecruitment.isNotBlank() &&
+                        checkRecruitment(selectedRecruitment)
                     ) ||
                 (currentPage == PlanType.OPENCHATTING.position && planOpenChattingLink.isNotBlank()) ||
                 (currentPage == PlanType.SUMMARY.position)
@@ -245,6 +244,12 @@ class PlanViewModel @Inject constructor(
         }
     }
 
+    fun validityOpenChattingLink() {
+        openChattingLinkRegexPattern.find(planOpenChattingLink.value)?.value?.let { matchedString ->
+            planOpenChattingLink.value = matchedString
+        }
+    }
+
     companion object {
         const val FIRST_PAGE_POSITION = 0
         const val DEFAULT_OLD_POSITION = -1
@@ -252,5 +257,7 @@ class PlanViewModel @Inject constructor(
         const val START_RECRUITMENT = 2
         const val END_RECRUITMENT = 99
         const val BLANK_STRING = " "
+        val openChattingLinkRegexPattern =
+            """https://open.kakao.com/o/[A-Za-z0-9]+""".toRegex()
     }
 }
diff --git a/app/src/main/java/org/sopt/pingle/presentation/ui/plan/planopenchatting/PlanOpenChattingFragment.kt b/app/src/main/java/org/sopt/pingle/presentation/ui/plan/planopenchatting/PlanOpenChattingFragment.kt
index 677a6a4d1..b895f8484 100644
--- a/app/src/main/java/org/sopt/pingle/presentation/ui/plan/planopenchatting/PlanOpenChattingFragment.kt
+++ b/app/src/main/java/org/sopt/pingle/presentation/ui/plan/planopenchatting/PlanOpenChattingFragment.kt
@@ -3,7 +3,11 @@ package org.sopt.pingle.presentation.ui.plan.planopenchatting
 import android.os.Bundle
 import android.view.View
 import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.flowWithLifecycle
+import androidx.lifecycle.lifecycleScope
 import dagger.hilt.android.AndroidEntryPoint
+import kotlinx.coroutines.flow.launchIn
+import kotlinx.coroutines.flow.onEach
 import org.sopt.pingle.R
 import org.sopt.pingle.databinding.FragmentPlanOpenChattingBinding
 import org.sopt.pingle.presentation.ui.plan.PlanViewModel
@@ -16,10 +20,10 @@ class PlanOpenChattingFragment :
     private val planViewModel: PlanViewModel by activityViewModels()
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-
         binding.viewModel = planViewModel
 
         addListeners()
+        collectData()
     }
 
     private fun addListeners() {
@@ -27,4 +31,10 @@ class PlanOpenChattingFragment :
             requireActivity().hideKeyboard(it)
         }
     }
+
+    private fun collectData() {
+        planViewModel.planOpenChattingLink.flowWithLifecycle(viewLifecycleOwner.lifecycle).onEach { openChattingLink ->
+            planViewModel.validityOpenChattingLink()
+        }.launchIn(viewLifecycleOwner.lifecycleScope)
+    }
 }
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index bc72e92cf..50994c1aa 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -193,6 +193,7 @@
     <string name="plan_open_chatting_title">오픈채팅방 링크를\n추가해주세요!</string>
     <string name="plan_open_chatting_hint">링크를 입력해주세요</string>
     <string name="plan_open_chatting_text_title">채팅방 링크</string>
+    <string name="plan_open_chatting_snackbar">유효하지 않은 오픈채팅방 링크입니다.</string>
 
     <!-- plan summary confirmation -->
     <string name="plan_summary_confirmation_title">핑글을 개최할\n준비 되었나요?</string>