The invention provides a rotor engine allowing double-face gas inflow and a control method, belongs to the field of internal combustion engines and particularly relates to a rotor engine allowing double-face gas inflow and a control method for adjusting the openness degree of gas inflow channels according to the rotation speed of the rotor engine. The running condition of the engine is judged according to rotation speed signals L1 output from a rotation speed sensor (12) to an ECU (electronic control unit) (E), the openness degree of the gas inflow channels is adjusted according to signals L2output from the ECU (E) to a gas inflow baffle position actuator (9), accordingly, the gas inflow volume can be controlled, and the good high speed performance of the rotor engine can be realized.