The utility model relates to a structure for avoiding difficult plugging and sling click of a quick coupling. The structure comprises one set of quick coupling, wherein the set of quick coupling is arranged in a compressed air system and consists of a female coupling and a male coupling, the upstream part of the quick coupling is provided with an instrument valve, and the instrument valve and the quick coupling are connected by conical threads. The structure has the advantages that the structure of the original compressed air system is not changed, and the upstream part of the original quick coupling is connected with the instrument valve, so the cutoff and exhaust of compressed air are realized, the plugging of the quick coupling is realized, and the sling click is avoided; the structure is simple and easy, the reliability is high, and the cost is lower.