Industrial wireless sensor network(IWSN) can provide wireless communication for the control system. However, packet losses caused by industrial environments and attacks can significantly degrade the performance of IWSN and can even destabilize an entire system. Therefore, a security path of the communication data's routing to reduce the packet losses rate and a modified PID controller to compensate for packet losses are proposed to reduce the influence of the network attack on the stability of IWSN control system. The control system applying the two proposed programs is simulated under various number of attack nodes by using OPNET and Simulink/TrueTime. An inverted pendulum is used as the object of the controller. Simulation results show that the combination of the optimal path and the modified PID controller can greatly improve the stability of the control system.