Auxiliary tool for mounting valve core

The utility model provides an auxiliary tool for installing a valve core, which comprises a holding rod and a hook rod, the holding rod comprises an assembling part and a holding part which are integrated, the end part of the assembling part is provided with a positioning pin for movably inserting the valve core to be assembled, the base part of the hook rod is rotatably connected with the middle part of the holding rod through a connecting pin, and the other end of the hook rod is provided with a hook claw. The hook rod is used for hooking a protruding frame on the outer edge of a hub, the holding part of the holding rod is pressed, the holding rod rotates around the connecting pin, the positioning pin jacks a valve core to be assembled into an assembling position on the hub, the lever principle is utilized in design, and after the hook rod and the outer edge of the hub are hooked and fixed, the positioning pin is rotated and adjusted, so that the valve core is assembled. When the valve core mounting device