Portable charging electric grinding machine

The utility model discloses a portable charging electric grinding machine. The portable charging electric grinding machine comprises a grinding mechanism and a machine body. The grinding mechanism is arranged at the front end of the machine body. The machine body comprises a power room, a connecting bearing part, an energy room and a base. The power room is located at the front portion of the machine body, a motor is arranged in the power room and connected with a motor output shaft, a shaft head of the motor output shaft is exposed out of the power room and coaxially connected with the fixed end of a jacket nut, the free end of the jacket nut is coaxially connected with a grinding head, a charging lithium battery is arranged in the energy room, the bearing part is arranged between the power room and the energy room, and the base is located at the rear portion of the machine body and connected with the energy room. The portable charging electric grinding machine is firm and durable in structure and high in application flexibility, and the grinding head can be replaced according to actual requirements.