Abstract: The IR/MMW terminal combined guidance missile, such as terminal-sensitive submunition, has been used widely on the war field. It is difficult to evaluate operational effectiveness with ball firing of terminal-sensitive submunition attacking armored forces. The movement model of terminal-sensitive submunition operate, such as ballistic model etc. was established. The attack state of terminal-sensitive submunition aiming at armored forces was constructed. The simulation test was used to evaluate hitting probability of terminal-sensitive submunition to armored forces. The operational effectiveness of terminal-sensitive submunition was evaluated also by simulation test. The simulation result demonstrates that the terminal-sensitive submunition has been the severe threat for armored forces.