Posterior cranium distraction drainage device

The invention discloses a posterior cranium distraction drainage device, and relates to the technical field of medical instruments, the posterior cranium distraction drainage device comprises a supporting frame, supporting wheels are symmetrically arranged on one side of the bottom end of the supporting frame, sliding grooves are symmetrically formed in one side of the bottom end of the supporting frame, sliding plates are connected to the interiors of the two sliding grooves in an attached manner, and storage grooves are symmetrically formed in the inner sides of the two sliding grooves; supporting springs are symmetrically and fixedly connected into the two storage grooves, L-shaped plates are symmetrically hinged to the inner sides of the two sliding grooves, and one ends of the two supporting springs are fixedly connected with one sides of the L-shaped plates. The lower electric telescopic column pushes the adjusting table to move at the top end of the inner side of the supporting frame, adjustment is fac