The invention discloses an efficient and environment-friendly sewage treatment device. The sewage treatment device comprises a filtering device, a biological treatment device, a disinfection tank, a communicating pipe, a water inlet pipe and a control terminal, wherein the filtering device comprises a first filtering device and a second filtering device; the first filtering device is mounted on the second filtering device; the biological treatment device is mounted on one side of the second filtering device, and the biological treatment device is mounted on the disinfection tank; the water inlet pipes comprise a first water inlet pipe and a second water inlet pipe, and the communicating pipes comprise a plurality of first communicating pipes, a plurality of second communicating pipes, a plurality of third communicating pipes and a plurality of fourth communicating pipes. The first filtering device and the second filtering device are used for filtering, meanwhile, waste residues obtained after operation and purified sewage can be secondarily recycled, the structure is simple, the design is reasonable, the sewage purification efficiency is greatly improved, and the device is effective and practical.