The invention relates to an elastic component for adjusting an axial clearance of a motor, which is padded at a tail end of a transmission shaft of the motor. One end surface of the elastic component is pressed against an inner wall of the motor, and the other end surface of the elastic component is pressed against shaft end gasket sleeved on the transmission shaft of the motor. Both end surfacesof the elastic component, which are pressed against the inner wall of the motor and the shaft end gasket respectively, are planes. Lateral surfaces connecting the two end surfaces on the elastic component are arc surfaces. The elastic component can compensate the clearance generated by assembly in the range of a certain force, and particularly realizes the adjustment of the axial clearance of themotor by matching the shaft end gasket. The elastic component has small size, realizes large compensation range, can realize zero-clearance assembly, and has simple structure and easy quantification production. Moreover, a reasonable section structure of the elastic component is utilized to make the change of the elasticity of the elastic component similar to linear change and make the axial movement change stably due to an axial force so as to reduce noise.