diff --git a/bsp/at32/libraries/f435_437/rt_drivers/drv_adc.c b/bsp/at32/libraries/f435_437/rt_drivers/drv_adc.c
index 9d46d22a6a698dc222648a443c9544e171f7bac8..a2d990da4a879a02c516d60f42e2b25423a007d2 100644
--- a/bsp/at32/libraries/f435_437/rt_drivers/drv_adc.c
+++ b/bsp/at32/libraries/f435_437/rt_drivers/drv_adc.c
@@ -75,7 +75,6 @@ static rt_err_t at32_adc_enabled(struct rt_adc_device *device, rt_uint32_t chann
     adc_config_struct.repeat_mode = FALSE;
     adc_config_struct.sequence_mode = FALSE;
     adc_base_config(adc_x, &adc_config_struct);
-    adc_ordinary_software_trigger_enable(adc_x, TRUE);
 
     if (!enabled)
     {