Novel built-in deodorization floor drain

The utility model discloses a novel built-in deodorization floor drain and in particular relates to a small-sized floor drain, wherein the novel built-in deodorization floor drain is invented using a water siphon principle and mounted below an earth surface floor drain. The novel built-in deodorization floor drain comprises a sewer pipe and a drain pipe and plays a role of assistance and remedy when the floor drain loses a deodorization function. The floor drain is sanitary equipment used for both water leakage and deodorization in a toilet. At present, floor drains of a lot of users lose the deodorization function because of improper installation and use. Professionals and professional tools are needed to update floor drains, and problems of high cost and ground damage are caused. Therefore the users have to use other materials to seal sewer outlets of floor drains, and a great deal of inconvenience is brought into daily life of users. The novel built-in deodorization floor drain uses the small-sized floor d