Puncture structure for pesticide filling of sprayer

The utility model relates to the technical field of sprayers, in particular to a puncturing structure for pesticide filling of a sprayer, which comprises an annular shell, the upper end of the annular shell is open, and a circular groove is formed in the middle of the lower end face of the annular shell. A circular groove is formed in the upper end of the annular shell, a supporting base is arranged in the middle of the circular groove, the supporting base is located at the circle center of the circular groove, a puncture end is arranged on the upper surface of the supporting base, a plurality of side edge puncture pieces are arranged on the side face of the puncture end, and an auxiliary positioning piece is detachably arranged at the upper end of the annular shell. The puncture end can conveniently puncture the sealing film, after puncture, the sealing film can be ripped and rotated through the arrangement of the side edge puncture part, the sealing film can be pushed aside, liquid medicine can quickly flow