Extension shaft servo motor capable of preventing moisture condensation

The invention discloses an extension shaft servo motor for preventing moisture condensation, and belongs to the technical field of the electric motor. The extension shaft servo motor for preventing condensation controls the temperature difference by using the feature of the warming speed under the cooperation of a dehumidification function shell and a condensation lug, thereby realizing a way capable of guiding the moisture condensation; when the servo motor works, hot air adjacent the stator is in moisture condensation on the condensation lug, and the water drop produced after the moisture condensation is collected by using an ultra-strong moisture absorption ball; compared with the traditional heat insulation, air circulation and like suppression measures, the harm caused by uncontrolledmoisture condensation in the servo motor can be obviously reduced by utilizing a way of controlling the moisture condensation through guiding, thereby guaranteeing the normal running of the servo motor, and prolonging the se