The invention discloses a lockset punching device. The lockset punching device comprises a punching mechanism, a control mechanism, an upper positioning mechanism and a lower positioning mechanism. The upper positioning mechanism comprises a lifting cylinder, a lifting sliding plate, an upper positioning plate and a rotary table. The lower positioning mechanism comprises a rotary positioning seatand a rotating motor. The punching mechanism comprises a first punching sliding plate, a lifting assembly, a second punching sliding plate, a translation assembly, a punching motor and a punching mounting plate. A motor mounting seat is arranged on the punching mounting plate. The punching motor is arranged on the punching mounting plate through the motor mounting seat. A punching handle used fordriving the punching motor to move horizontally is arranged on one side of the motor mounting seat. The lockset punching device is simple in structure, convenient to use, capable of punching holes with different thicknesses in different shapes of locksets and punching equidistant circumferential holes at the same height and equidistant longitudinal holes on the same straight line, high in punchingefficiency and good in punching quality.