The invention provides a dual-system electrification control circuit and a control method thereof. Based on an original system, similar electronic assemblies of two electro-optical systems are integrated, but new electronic assemblies are not added, and the size, weight and cost of a whole system can be greatly decreased. A multi-stage electrification system is adopted, the first-stage system adopts an analog circuit consisting of an APP switch and an electromagnetic relay, and the reliability and safety of a power supply system can be effectively improved. The second-stage system adopts timing sequence electrification control, system disturbance produced by different starting times of the system after electrification can be avoided. The third-stage system adopts digital IO control and isflexible to control, the system can be in different working states according to different execution tasks, and the power consumption and loss of the system can be effectively reduced by powering off excessive electronic assemblies. The dual-system electrification control circuit adopts the APP switch and is simple in operation and suitable for wide popularization.