According to the characteristic of maintenance training system for certain type warship cannon weapon system, it is designed and developed. The form and function of the system is introduced. The imitate circuit board of key design for main controlling single chip computer is described. The thought and method of imitate function is described. The systematic software includes mainly the system manages software, the maintenance training software, the operate training software, the principle teaching software and the check evaluate software. As a result. The software interface is designed friendly. According to the study need of the received trainer, the different study content is switched promptly. The interactive performance is good.