In order to study the movement process and action process of the forced-1A fuze, the working process of the forced-1A fuze was simulated. Firstly, a virtual prototype model of the fuze was established by using the multi-body system dynamics simulation software MSC.ADAMS to simulate its motion process and obtain the impact kinetic energy of the needle-piercing detonator. The detonation process of the detonation sequence is simulated, and the reliability of the detonation between the needle-punched detonator → the detonator → the booster → the main charge is verified. The simulation results can provide data support for the further improvement or intelligent transformation of the forced-1A fuze.