A meat cutting machine of the present invention includes a machine frame and a cutter group. The cutter group includes at least two groups of cutter bars. Blades on the two groups of cutter bars are crosswise arranged to form a cutting edge region. The machine frame includes an upper machine frame, a lower machine frame and a regulating ejector rod. At least one threaded through hole is formed in a side wall of the machine frame. The cutter bars include shaft shoulders. Since the upper machine frame and the lower machine frame are separable and the cutter bars are convenient for disassembly and removal, the cutter bars can be easily washed and are sanitary in design. The regulating ejector rod can be used to perform minor distance adjustments between interactive blades, which ensures close cooperation between two matched blades and the meat cutting effect of the meat cutting machine.