Quick-insertion buoy seat capable of quickly replacing buoy

The utility model provides a quick-plug float seat capable of quickly replacing a float, which comprises a supporting assembly component, a fishing line positioning component, a convex matching component, a switching bearing component, a concave matching component and a float positioning component, and is characterized in that a positioning ring body is arranged at the tail end of a supporting end post, so that a fishing line can penetrate through a threading through hole of the positioning ring body, and the fishing line can be quickly replaced. The supporting end post can be conveniently installed on a fishing line, a group of matching flanges arranged in the axial direction are arranged at the post head end of the supporting end post, an adapting end pipe provided with a matching groove and a positioning cavity hole is further arranged, and the matching groove is matched with the matching flanges, so that the supporting end post is connected with the adapting end pipe, loosening is avoided, and after the f