Mobile phone display screen machining and positioning device

The utility model relates to a mobile phone display screen machining positioning device which comprises a platen, a clamping mechanism is arranged at one end of the platen, and a locking mechanism is arranged at the other end of the platen. The clamping mechanism comprises two sets of L-shaped plates, transverse plates are arranged on the outer sides of the L-shaped plates, limiting mechanisms are arranged on the transverse plates, screw rods are further correspondingly arranged on the transverse plates, and the two sets of screw rods are connected through screw pipes; the locking mechanism comprises a C-shaped plate buckled at the tail end of the bedplate, a support and a mounting plate are arranged at the top of the C-shaped plate in parallel, a polygonal through hole is formed in the mounting plate, an inlet and outlet opening communicated with the through hole is formed in the top of the mounting plate, mounting lugs are arranged at the top of the support, a rotating shaft is arranged between two groups o