The invention provides two execution schemes to a delay time setting process of an electronic detonator explosion initiating device. One execution scheme comprises: sequentially executing a clock calibration process for W1 times and a writing delay time process for W2 times; and outputting an error information table. The other execution scheme comprises: executing a delay time setting process forW times; and outputting the error information table. In the clock calibration process, calibration commands can be sent to all detonators first and then state information is read back one by one; or in the clock calibration process, time calibration commands are sent to detonators one by one first, and then time frequency is calculated according to a calibration pulse fed back and is stored. In the writing delay time process, a writing delay time command is sent out directly or after delay time data adjustment. In the delay time setting process, a clock calibration command is sent to one detonator first and the clock frequency is calculated according to the calibration pulse fed back; and after the delay time data adjustment, the writing delay time commands are sent to the detonators. Thus, the explosion initiating device capable of calibrating the clock frequency of the electronic detonators is realized.