The utility model relates to a waste metal hydraulic packing and shearing machine used for packing and shearing the cold state bunching masses of various light and thin black and non-ferrous metal wastes. The packing and shearing machine comprises a packer and a gantry shear. The packer comprises a machine body part, a primary side pressure part, a secondary side pressure part and a shoving part; the machine body part comprises a bottom base (5), a shoving oil cylinder support (2), a packer rear base (4) and a side pressure oil cylinder support (6); the primary side pressure part (7) comprises a primary side pressure plate (7.1) and a primary side pressure oil cylinder (7.2); the secondary side pressure part (8) comprises a secondary side pressure plate (7.1) and a secondary side pressure oil cylinder (8.2); the shoving part comprises a shoving oil cylinder (1) and a shoving head (3); the gantry shear is arranged on the front side of the bottom base (5) and comprises a portal frame (10), a material pressing slide groove (18), a shearing slide groove (17), a material pressing oil cylinder (14), a shearing oil cylinder (13), a material pressing head (15), a slide shearing knife post (12) and a fixed knife post (11). The utility model integrates the packing and the shearing into a whole, and has the advantages of large volume of a compression chamber and opening area, stable work, tight bundle masses, and large shearing force.