The invention discloses a sterilizing machine control system which is arranged inside a sterilizing machine. The control system comprises a controller, a driver, a data transmission port, a rotation speed counter for detecting the rotation speed of a spraying arm (21), a first flow meter for detecting the inlet water amount into a cabin body (3), a first temperature sensor for detecting the temperature inside the cabin body (3), a first liquid level sensor for detecting the liquid level inside the cabin body (3), a second temperature sensor for detecting the temperature inside a water tank (6), a second liquid level sensor for detecting the liquid level of inside the water tank (6), a second flow meter for detecting the inlet pure water amount, a third temperature sensor for detecting the temperature at the air outlet of a fan (26), a suction motor for sucking a cabin door (4), as well as a door lock, a pure water pump, an alkali lye pump and an acid pump mounted on the cabin door (4). According to the invention, the automatic control of a sterilizing process can be realized and the programs of the control system can be updated through the USB interface.