Safety buckle for plastic coaming box

The utility model discloses a plastic coaming box safety buckle which comprises a tray, a box body covers the outer wall of the top of the tray, a box cover is clamped at the top of the box body, safety buckle bodies are arranged at the tops and the bottoms of the outer walls of the two sides of the box body, clamping seats are arranged on the outer walls of the tray and the two sides of the box cover, and the safety buckle bodies penetrate through the interiors of the clamping seats. A cavity is formed in the safety buckle body, a clamping block is slidably connected to the interior of the cavity, and a clamping spring connected with the clamping block is welded to the inner wall of the cavity. According to the utility model, the safety buckle body is inserted into the clamping seat, and the elastic force of the clamping spring can push the clamping block to block above the clamping seat from the interior of the safety buckle body, so that the box body and the tray as well as the box body and the box cover c