diff --git a/local_plugins/agent_service/ios/agent_service/Sources/agent_service/AudioSessionHub.swift b/local_plugins/agent_service/ios/agent_service/Sources/agent_service/AudioSessionHub.swift
index 0586be429..3f4e5f67b 100644
--- a/local_plugins/agent_service/ios/agent_service/Sources/agent_service/AudioSessionHub.swift
+++ b/local_plugins/agent_service/ios/agent_service/Sources/agent_service/AudioSessionHub.swift
@@ -684,7 +684,7 @@ public class AudioSessionHub {
                 case .increase:
                     newValue = min(currentValue + 0.2, 1.0)  // 改回0.1避免变化过大
                 case .decrease:
-                    newValue = max(currentValue - 0.2, 0.0)
+                    newValue = max(currentValue - 0.2, 0.1)
                 case .mute:
                     newValue = 0.1
                 case .setMax: