Joint for aircraft pitot dynamic pressure detection test

The utility model provides a joint for an aircraft pitot dynamic pressure detection test. The joint comprises a mouthpiece, a protective pad, a main body, a protective sleeve, a blanking cap, a firstO-shaped ring and a second O-shaped ring, wherein the main body is a revolving body with two open ends, the front end is fixedly connected with the mouthpiece, the rear end is in threaded connection with the blanking cap, the blanking cap is of a sleeve structure, the protective sleeve is sleeved in the blanking cap, a step at the front end of the outer circumference of the protective sleeve is limited by the front end surface of the blanking cap, and the rear end of the protective sleeve extends out of the rear end of the blanking cap; a protective pad for protecting the dynamic pressure portof the airspeed head is arranged in the connecting nozzle; a first O-shaped ring is arranged in an inner circumferential groove in the front end of the main body, a second O-shaped ring is extruded between the end face of an