Plastic bucket cover with breathing hole

The utility model relates to a plastic bucket cover with a breathing hole. The round breathing hole is formed in the cover body, the diameter of the hole is 1.5-4.5 mm, a Teflon breathing film is hot-pressed on the inner side of the breathing hole, a protection flange is arranged on the breathing hole, and the protection flange plays a role of stabilizing the heat-sealing fastness of the breathing film. In use, air can freely pass through the breathing hole, while oil or other liquid in and out of a plastic bucket can not pass through the breathing hole. The plastic bucket cover with the breathing hole has the advantages of being simple and reasonable in structure, and capable of effectively solving the problems that the plastic bucket storing chemical materials, painting and coating under different temperatures and pressures sinks down or swells due to unbalance of inner pressure and outer pressure of the plastic bucket in the package, transport and storage processes.