The invention relates to a double-locking lock catch. The double-locking lock catch is designed to aim at the technical problems that existing like products is single in locking mode, consequently the stability is poor, assembly production is inconvenient, and locking force is poor. A handle is arranged in a shell of the lock catch. The double-locking lock catch has the main points that a sliding block is further arranged in the shell; a sliding block head at one end of the sliding block is provided with a sliding hole; the sliding hole and the hinged end of the handle are riveted into a whole through an opening hinge pin in a series connection mode; the sliding hole of the sliding block is formed obliquely; meanwhile, a pin gasket at the end of the handle is hinged to one end of the inner diameter of the shell through a knurling cylindrical pin; a knob switch in the middle of the handle penetrates through a handle knob hole of the handle and a sliding block knob hole of the sliding block sequentially, and the knob switch and a locking plate are riveted into a whole in a series connection mode; a spring piece is arranged between the handle and the sliding block; one end of the spring piece is fixed to the handle through a boss pressing rivet; and a bent piece at the other end is buckled with a piece hole of the sliding block. When the handle is opened through the knurling cylindrical pin, the sliding block slides in the shell, the opening hinge pin slides in the sliding hole of the sliding block, and a limiting piece and the sliding block head achieve abutting limiting.