The invention discloses a pressure relief joint, which comprises a joint body, a pressure relief valve and a connecting ring, wherein the joint body is provided with an air passage, a first opening atone end of a connecting air passage and a second opening at the other end of the connecting air passage, the pressure relief valve is arranged on the joint body and is mainly used for releasing the gas pressure in the air passage, the connecting ring can be rotatably arranged at one end of the joint body relative to the joint body and part of the connecting ring is positioned in the first openingof the joint body, the inner ring surface of the connecting ring is provided with an internal thread part, the pressure relief joint can be connected with various inflators through the connecting part of the connecting ring, so that a consumer does not need to purchase a special pressure relief structure, thereby achieving the effect of increasing the use convenience and saving the cost.