The invention provides a method for controlling flashing modules, comprising the following steps of: firstly, aiming at a shot object, performing a continuous and automatic focusing program; then, calculating the data of the distance and the size of the shot object, and controlling the flashing module to generate corresponding preflashing; when the data is not less than a preset value, controlling the flashing module to generate preflashing with first intensity; when the data is less than the first preset data value, continuously judging whether the data is less than or equal to a second preset data value; when the data is less than or equal to the second preset data value, controlling the flashing module to generate preflashing with second intensity; and when the data is more than the second preset data value, controlling the flashing module to generate preflashing with third intensity. The invention is used for controlling the flashing module in a pick-up device to generate the mostcorrect preflash intensity, so that the pick-up device obtains the most correct image exposure information, and main flashing subsequently generated by the flashing module has no faults so as to provide the most correct flash intensity.