Abstract: The paper introduced hardware design and software implementation of network reformation to electric control system of original hoist relay in the fifth coal mine of Pingdingshan Mining Group.In the reformation project,two PLCs are used for hoist driving control and it improves intelligent level of hoist control system.The monitoring and control system is designed to monitor and control hoist running state real-timely and realizes remote monitoring and control through network.The system has done a leap from old relay-contact device control to automatic control.After all kinds of test running,various performance of the system satisfies the design requirements of hoist transportation with safe and reliable running and steady performance.