Abstract: In order to better achieve the combustion on-off function of electrically controlled solid propellant (ECSP), a reasonable ignition electrode design is necessary. In this research, parallel electrode structures and array electrode structures were proposed, and the factors affecting ignition delay time were investigated. Numerical simulations of current density showed that current density was concentrated at the edges and vertices of the electrodes, and increasing the electrode area and electrode spacing reduced the current density. The ignition test results indicate that the flame always first forms from the anode. When the electrodes and their spacing are the same, the ignition voltage increases from 200 V to 260 V, and the ignition delay time decreases by 54% to 85%; When the electrodes and the voltage are the same, reducing the electrode spacing from 3 mm to 1 mm decreases the ignition delay time by 81% to 90%; Under the same voltage and electrode spacing, the electrode area decreases and the ignition delay time decreases. At a voltage of 260 V and an electrode spacing of 1 mm, the ignition delay times for two types of array electrodes were measured to be 63% and 61% of those for parallel electrodes with the same corresponding area. It is demonstrated that increasing the voltage, reducing the electrode spacing and the electrode area, and using array electrodes can significantly decrease the ignition delay time.