The invention provides an aviation connector moistureproof apparatus, and relates to the technical field of power installation moistureproof apparatuses. The apparatus is intended for sleeving the outside of an aviation connector. The apparatus herein includes a hollow ellipsoidal transparent handle, absorption agents which are arranged in the internal cavity of the transparent handle, and port tightness adjustment apparatuses which are arranged at two ends of the transparent handle. The transparent handle is a flexible rubber material member. According to the invention, by arranging the absorption agents inside the transparent handle, the aviation connector moistureproof apparatus enables a user to real-timely observe the color of the absorption agents, so that the user can exchange the absorption agents as appropriate. The port tightness adjustment apparatuses at the two ends of the transparent handle make the apparatus more applicable in that the aviation connector moistureproof apparatus can be applied to aviation connectors of various specifications. The apparatus provides excellent moisture resistance of aviation connectors, which can prevent the aviation connectors from having earth faults or causing a backend to constantly generate alarm signals. Therefore, the apparatus has the characteristics of excellent use effects and wide promotion value.