A coal mine Wi-Fi base station possessing a locomotive haulage signal control function provided by the utility model comprises a microprocessor unit, and communication units and a memorizer unit which are connected with the microprocessor unit interactively. The microprocessor unit comprises a first microprocessor and a second microprocessor, and the communication units comprise an RS485 communication unit, an Ethernet communication unit and a Wi-Fi wireless unit. The memorizer unit comprises a Flash memorizer and a SDRAM unit, and the RS485 communication unit is connected with the first microprocessor. With the arrangement of the RS485 communication unit, the coal mine Wi-Fi base station of the utility model can be connected with various devices possessing RS485 communication interfaces, such as, a teleseme, a point switch, etc., thereby realizing the locomotive haulage signal control function.