Clamp rapid switching structure

The utility model relates to the technical field of test fixtures, in particular to a fixture rapid switching structure, which comprises a base plate, a guide block, a magnetic iron block and a bottom shell, base handles are mounted on two sides of the bottom shell, a bottom probe module fixing plate is mounted on one side of the top of the bottom shell, the top of the bottom shell is sleeved with the base plate, and the bottom probe module fixing plate is mounted on the other side of the bottom shell. A plurality of sets of guide blocks are installed on the two sides of the top of the base plate, shaft sleeves are installed on the two sides of the interior of the base plate, a magnetic attraction iron block is installed on the top of the base plate, limiting columns are installed on the two sides of the bottom of the magnetic attraction iron block, a top handle is installed on the front face of the magnetic attraction iron block, and a polyurethane guide block is installed on one side of the bottom of the ma