Disassembling and assembling tool for valve collet

The utility model discloses a disassembling and assembling tool for a valve collet, which relates to the technical field of engine maintenance and comprises a base, a support rod is mounted on the base, a center rod is mounted in the support rod in a sliding manner, a press-fitting head is mounted at the bottom end of the center rod, and a through groove is formed in the press-fitting head; a first connecting rod is installed on the supporting rod through a connecting pin, a second connecting rod is rotatably installed on the first connecting rod through a connecting pin, the second connecting rod is rotatably connected with the center rod, the section of the base is in a concave shape, the press fitting head is located at the open end of the concave base, and a ball is fixedly connected to the end, away from the supporting rod, of the base. And the section of the first connecting rod is L-shaped. According to the utility model, along with the extrusion force of the press-fitting head, one end, which is posit