Self-adaptive fishing rod front plug with exhaust function

The self-adaptive fishing rod front plug with the exhaust function comprises a plug head, the plug head is used for being inserted into a front opening of the outermost section of a fishing rod, an insertion hole is formed in the center of the plug head, the insertion hole and the plug head are coaxially arranged, the end, stretching into the front opening, of the plug head is provided with a baffle for blocking the insertion hole, and the end, stretching into the front opening, of the plug head is provided with an air outlet. The other end of the plug is provided with an opening communicated with the jack; the limiting part is connected with the end, away from the baffle, of the plug, the outer diameter of the limiting part is larger than the inner diameter of the front opening, and a guide hole coaxial with the insertion hole is formed in the limiting part; one end of the opening part is arranged in the inserting hole, and the opening part moves towards the direction close to the baffle and can enable the o