diff --git a/app/src/main/kotlin/top/yeij/cyrene/ui/chat/MessageBubble.kt b/app/src/main/kotlin/top/yeij/cyrene/ui/chat/MessageBubble.kt
index 3359a57..d948ae8 100644
--- a/app/src/main/kotlin/top/yeij/cyrene/ui/chat/MessageBubble.kt
+++ b/app/src/main/kotlin/top/yeij/cyrene/ui/chat/MessageBubble.kt
@@ -1,6 +1,7 @@
 package top.yeij.cyrene.ui.chat
 
 import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -51,6 +52,7 @@ fun MessageBubble(message: HistoryMessageDto) {
             .fillMaxWidth()
             .padding(horizontal = 14.dp),
         horizontalAlignment = if (isUser) Alignment.End else Alignment.Start,
+        verticalArrangement = Arrangement.spacedBy(6.dp),
     ) {
         // 来源角标放在消息组顶部，明确标注下面这一组气泡来自哪里
         if (source != null) {
diff --git a/app/src/main/kotlin/top/yeij/cyrene/ui/chat/MessageSource.kt b/app/src/main/kotlin/top/yeij/cyrene/ui/chat/MessageSource.kt
index 1a391e7..d8d902a 100644
--- a/app/src/main/kotlin/top/yeij/cyrene/ui/chat/MessageSource.kt
+++ b/app/src/main/kotlin/top/yeij/cyrene/ui/chat/MessageSource.kt
@@ -13,24 +13,30 @@ private val platformLabels = mapOf(
 
 /**
  * 来源角标（S1.3）：每条消息默认显示来源。
- * 优先用 `deviceId` 区分具体端，再回落到 `platform`；两者都没有则返回 null（不显示）。
+ * - 主人发的 → 「来自 X」（从哪一端发出）
+ * - 昔涟发的 → 「发送至 X」（回到哪一端）
+ * 优先用 `deviceId` 区分具体端，再回落到 `platform`；两者都没有则不显示。
  */
 fun messageSourceLabel(message: HistoryMessageDto): String? {
+    val name = sourceName(message) ?: return null
+    val verb = if (message.role == "assistant") "发送至" else "来自"
+    return "$verb $name"
+}
+
+private fun sourceName(message: HistoryMessageDto): String? {
     val deviceId = message.deviceId
     if (!deviceId.isNullOrBlank()) {
-        if (deviceId.startsWith("voiceassist")) return "来自安卓"
+        if (deviceId.startsWith("voiceassist")) return "安卓"
         if (deviceId.startsWith("web:")) {
             val browser = deviceId.removePrefix("web:").substringBefore(':')
-            return "来自 Web($browser)"
+            return "Web($browser)"
         }
         // IM 端 deviceId 形如 <平台名>:<配置id>:<uid>，只取平台名做友好显示
-        platformLabels[deviceId.substringBefore(':')]?.let { return "来自 $it" }
-        return "来自 $deviceId"
+        platformLabels[deviceId.substringBefore(':')]?.let { return it }
+        return deviceId
     }
 
     val platform = message.platform
-    if (!platform.isNullOrBlank()) {
-        return "来自 ${platformLabels[platform] ?: platform}"
-    }
+    if (!platform.isNullOrBlank()) return platformLabels[platform] ?: platform
     return null
 }