The invention relates to a hybrid power automobile work mode control method, which comprises the following steps that the position of an accelerator pedal corresponds to a certain automobile speed, and a corresponding relationship between the pedal position and the automobile speed is obtained; an automobile speed change rate from the current automobile speed to a target automobile speed is calculated, and the automobile speed control increment is calculated according to the automobile speed change rate; in the hybrid power automobile work mode switching process, an engine accelerator changes according to the set change rate, and a speed regulation command of a motor is determined according to the motor rotating speed control increment. The hybrid power automobile work mode control method has the advantages that the output torque of an engine does not need to be precisely estimated, the running stability of vehicles, particularly the running stability in the mode switching process can be maintained all the time, the mechanical impact is reduced, and the driving comfort and the robustness in the mode switching control process are improved.