An electrically controlled surface blowout preventer control rotary valve is applied to a control system of an oil blowout preventer, and mainly consists of pressure relays, a rotary valve and a traction electromagnet, wherein a rotary valve switch handle is arranged on the rotary valve. The electrically controlled surface blowout preventer control rotary valve is characterized in that the traction electromagnet is connected to the handle, and a push-and-pull rod of the traction electromagnet is perpendicularly connected to the handle. Pipelines of a liquid inlet and a liquid outlet of the rotary valve are fixed with the pressure relays. Pressure input connectors of the pressure relays are communicated with the insides of the pipelines. The electrically controlled surface blowout preventer control rotary valve has the advantages that the control rotary vale utilizes the traction electromagnet to push a three-position four-way rotary valve or a two-position three-way rotary vale so as to control a switch of the blowout preventer, and utilizes the pressure relays to transmit signals of the switch of the blowout preventer to a remote station and a driller console. The control rotary valve reduces middle links of pneumatic control, can shorten operation response time, and resolves the problem that a common electrically controlled hydraulic-control device can not do without pneumatic control links.