The disclosure relates to the technical field of motor driven, and in particular to a current-controlled motor. The motor includes a rotator assembly, a stator assembly, external connectors and bearings, wherein the stator assembly is in driven connection with the rotator. And the rotator assembly is connected with the bearings which connected with the external connector. Two capacitance structures are formed by the outer surfaces of the two ends of the rotator assembly and the inner surface of the relative position of the external connector with air gap between them.