Dynamite crusher is the key equipment for the leftover material using in the process of dynamite producing and also for the reusing of the overdue dynamite, considering the security of the process and the reliability of the electric controlling system, the realization principle of the system is analyzed. For widely use of new dynamite crusher technology, introduce the security measures of control system design, and adopt security design method, redundancy deign method and failure avoidance method to ensure the system reliability.