diff --git a/main/boards/df-k10/k10_audio_codec.cc b/main/boards/df-k10/k10_audio_codec.cc
index 1f6364b9..f93ab7ae 100644
--- a/main/boards/df-k10/k10_audio_codec.cc
+++ b/main/boards/df-k10/k10_audio_codec.cc
@@ -176,7 +176,7 @@ void K10AudioCodec::EnableInput(bool enable) {
             fs.channel_mask |= ESP_CODEC_DEV_MAKE_CHANNEL_MASK(1);
         }
         ESP_ERROR_CHECK(esp_codec_dev_open(input_dev_, &fs));
-        // ESP_ERROR_CHECK(esp_codec_dev_set_in_channel_gain(input_dev_, ESP_CODEC_DEV_MAKE_CHANNEL_MASK(0), 40.0));
+        ESP_ERROR_CHECK(esp_codec_dev_set_in_gain(input_dev_, 37.5)); //麦克风增益解决收音太小的问题
     } else {
         ESP_ERROR_CHECK(esp_codec_dev_close(input_dev_));
     }
@@ -223,4 +223,4 @@ int K10AudioCodec::Write(const int16_t* data, int samples) {
         return bytes_written / sizeof(int32_t);
     }
     return samples;
-}
\ No newline at end of file
+}