Mountaineering buckle

The utility model belongs to the technical field of outdoor tools, and particularly provides a climbing carabiner which comprises a climbing carabiner body, a closing execution part and a surface cover, and the climbing carabiner body is provided with a mounting hole and an opening; at the opening, one end of the carabiner body is a contact end, and the other end of the carabiner body is a connecting end; the first end of the closing execution piece is rotatably connected with the connecting end, and the second end of the closing execution piece can abut against the contact end to close the opening or be separated from the contact end to open the opening; the surface cover is connected with the climbing button carabiner body at the mounting hole; the surface cover is matched with the mounting hole to form a containing cavity; the containing cavity is used for containing the positioner. According to the climbing carabiner provided by the invention, the mounting hole is formed in the climbing carabiner body and