The invention relates to an electric block oil level control device. The device comprises a reducer casing body, a monitoring oil cavity is formed in the side face of the reducer casing body, a communication hole communicated with the reducer casing body is formed in the side face of the bottom of the monitoring oil cavity, an oil level monitoring instrument is arranged in the monitoring oil cavity in the vertical direction and is connected with a controller, the controller is connected with an alarm device and a communication module, the communication module is connected with a moving device and a monitoring device, an oil adding nozzle communicated with the reducer casing body is formed in the upper portion of the reducer casing body, a connecting short pipe is arranged at the top end of the oil adding nozzle, an automatic locking rod is arranged in the oil adding nozzle, and the outer portion of the automatic locking rod is sleeved with a reset spring; and a sealing cover plate is arranged at the top end of the automatic locking rod, the connecting short pipe is connected with an oil injecting pipeline, the oil injecting pipeline is connected with a lubricating oil tank, and the oil injecting pipeline is provided with an electromagnetic valve. The electric block oil level control device has the beneficial effects of being simple in structure and high in safety and facilitating oil level monitoring.