The invention discloses longitudinal and transverse cutting computer cut-to-size saw equipment which comprises a control unit, a feed unit, a longitudinal sawing unit, a transition feed unit, a lift type longitudinal and transverse bidirectional conveying platform, a transverse sawing unit and an excess material and waste treatment unit. The longitudinal sawing unit comprises a longitudinal sawing main machine rack, a longitudinal sawing saw carriage, a longitudinal sawing pressure cross beam, a longitudinal sawing plate front alignment device, a longitudinal sawing feed pushing rod cross beam assembly and a first conveying platform. The transition feed unit comprises a feed hooking hand mechanism, an excess material discharge mechanism and a second conveying platform. The lift type longitudinal and transverse bidirectional conveying platform comprises a transverse conveying unit and a longitudinal conveying unit which are arranged in a staggered mode. The transverse sawing unit comprises a transverse sawing main machine rack, a transverse sawing saw carriage, a transverse sawing pressure cross beam, a transverse sawing plate front alignment device and a third conveying platform. By adoption of the longitudinal and transverse cutting computer cut-to-size saw equipment, plate automatic feeding, automatic longitudinal cutting and automatic transverse cutting are achieved, trimming excess materials can be automatically treated, processing efficiency is greatly improved, and labor force is saved.