The invention discloses an electric driven injection molding machine and a protection method for a screw in a storing process thereof. The invention provides the electric driven injection molding machine and belongs to the technical field of the injection molding machine. The technical problem of huge resistance in a screw rotating process caused by incomplete melting of the raw materials in the injection molding machine in the prior art is solved. According to the technical scheme, the electric driven injection molding machine comprises a charging barrel, a storing motor and an injection motor, wherein the screw is arranged in the charging barrel; the storing motor is arranged on the charging barrel and is connected with the screw; the storing motor controls the screw to rotate in the charging barrel; and the injection motor is arranged at the rear end of the charging barrel and can control the screw to axially move in the charging barrel. The electric driven injection molding machine has the beneficial effects that the raw material injection and the screw rotation are respectively controlled by two independent servo motors; compared with the traditional hydraulic driven injection molding machine, the electric driven injection molding machine is more precise in structure and lower in energy consumption; the rotation of the screw is controlled by the motor; when the screw is under abnormal condition, the power of the motor can be cut off as soon as possible and the screw can be stopped rotating; the corresponding speed is higher; and the safety of the screw can be quickly protected.