The invention provides a motor support structure of an electric fan. The motor support structure comprises a motor, a motor support, a synchronous motor support assembly and a motor cover cap. The motor support comprises a first plate body, a second plate body and a hollow supporting shaft used for supporting the first plate body and the second plate body. The first plate body is connected with the second plate body. The first end of the hollow supporting shaft is connected with the second plate body. The second end of the hollow supporting shaft is connected with a supporting body of the fan. The motor is fixedly installed on the first plate body. The synchronous motor support assembly is fixedly installed on the second plate body. A wire of the motor penetrates through the second plate body and the hollow portion of the hollow supporting shaft. The motor cover cap is fixedly installed on the first plate body and used for covering the motor. The invention further relates to the electric fan with the motor support structure. The motor support structure and the electric fan are reasonable in design, the strength of the motor support structure is high, assembly is convenient, a machine head of the electric fan can not easily shake, the wire of the motor can freely pass through the supporting shaft without being scratched, and the motor support structure and the electric fan are safe and reliable.