The invention discloses a digital control hydraulic brake type plate shearing machine, which comprises a frame, an upper tool post, a lower tool post, a hydraulic transmission system for driving the upper tool post to reciprocate, a tool post angle adjusting device for adjusting a shearing angle of the upper tool post, a material stopping device, and a tool post interval adjusting device; the plate shearing machine also comprises a computerized numerical control (CNC) digital control system; and the CNC digital control system is connected with the hydraulic transmission system, the tool post angle adjusting device, the material stopping device and the tool post interval adjusting device. By adopting the technical scheme, the operation of the plate shearing machine is controlled by the CNC digital control system; relative working parameters are input through a key input module on a control panel of the CNC digital control system, so the automatic shearing work of the plate shearing machine is realized; and the CNC digital control system is connected with the tool post angle adjusting device, the material stopping device and the tool post interval adjusting device of the plate shearing machine, the error caused by manual operation is removed, and the shearing precision and the shearing efficiency of the plate shearing machine are improved.