diff --git a/core/util/src/main/java/com/ku_stacks/ku_ring/util/KuringNotificationManager.kt b/core/util/src/main/java/com/ku_stacks/ku_ring/util/KuringNotificationManager.kt
index a4a166d6e..af0c41988 100644
--- a/core/util/src/main/java/com/ku_stacks/ku_ring/util/KuringNotificationManager.kt
+++ b/core/util/src/main/java/com/ku_stacks/ku_ring/util/KuringNotificationManager.kt
@@ -123,6 +123,7 @@ object KuringNotificationManager {
             .setSmallIcon(smallIconRes)
             .setContentTitle(title)
             .setContentText(body)
+            .setStyle(NotificationCompat.BigTextStyle().bigText(body))
             .setSound(defaultSound)
             .setContentIntent(pendingIntent)
             .setAutoCancel(true)
diff --git a/core/util/src/test/java/com/ku_stacks/ku_ring/util/KuringNotificationManagerTest.kt b/core/util/src/test/java/com/ku_stacks/ku_ring/util/KuringNotificationManagerTest.kt
new file mode 100644
index 000000000..3c396b3f5
--- /dev/null
+++ b/core/util/src/test/java/com/ku_stacks/ku_ring/util/KuringNotificationManagerTest.kt
@@ -0,0 +1,41 @@
+package com.ku_stacks.ku_ring.util
+
+import android.app.Notification
+import android.app.NotificationManager
+import android.content.Context
+import android.content.Intent
+import androidx.test.core.app.ApplicationProvider
+import org.hamcrest.CoreMatchers.`is`
+import org.hamcrest.MatcherAssert.assertThat
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+import org.robolectric.Shadows.shadowOf
+
+@RunWith(RobolectricTestRunner::class)
+class KuringNotificationManagerTest {
+
+    @Test
+    fun `showCustomNotification sets body as big text`() {
+        val context = ApplicationProvider.getApplicationContext<Context>()
+        val body = "오늘 19:30 녹색지대 공연 시작\n\nHearts2Hearts\nJANNABI\nZICO"
+
+        KuringNotificationManager.showCustomNotification(
+            context = context,
+            intent = Intent(),
+            title = "녹색지대 DAY1",
+            body = body,
+            largeIconRes = 0,
+            smallIconRes = 0,
+        )
+
+        val notificationManager =
+            context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+        val notification = shadowOf(notificationManager).allNotifications.single()
+
+        assertThat(
+            notification.extras.getCharSequence(Notification.EXTRA_BIG_TEXT).toString(),
+            `is`(body),
+        )
+    }
+}