Key test fixture

The utility model discloses a key test fixture, which comprises an electric cabinet, a floating positioning mechanism and a key driving mechanism, wherein a test control system and an electronic device are arranged in the electric cabinet; the floating positioning mechanism is positioned above the electric cabinet; the floating positioning mechanism comprises a positioning block with an inner cavity and a PCB located in the inner cavity of the positioning block, the positioning block floats up and down, and the PCB is connected to a test control system in the electric cabinet through a wire. The key driving mechanism comprises a top plate and a driving air cylinder connected with the top plate, an upper connecting plate is arranged below the top plate, the upper connecting plate is provided with a lower connecting plate through an outer connecting rod, a pressing block is arranged on the lower connecting plate in a penetrating mode, a set of inner connecting plates supported by inner connecting rods are arran