The utility model provides an electromagnetic door lock's energy -saving control device, characterized by: the automatic door closer of the mechanical formula of installation on door leaf and door frame, ability self -closing door leaf during unmanned business turn over, install the human detection device of being close to in the department of entering respectively with the department of going out region, install electromagnetic door lock's adsorbed iron board and electro -magnet respectively on door leaf and door frame, install the access control ware in the department of entering, the power supply of electromagnetic door lock's magnet coil is crossed by the power -on that access control ware contact, the department's of entering human body are close to the detection device contact, a human body of going out is close to detection device contact series connection connection control. The magnet coil circular telegram that removes electromagnetic door lock when having personnel to be close to entering of door leaf produces the electromagnetic force, and all the other circumstances electromagnetic door lock's magnet coil all cuts off the power supply, makes total power consumption of electromagnetic door lock significantly reduce, the personnel of going out need not can go out according to door opening button simultaneously, and it is more convenient to go out.