PURPOSE: To promote execution efficiency while keeping the effect of deodorization and to reduce cost when a suction port for deodorization is provided to a urinal.

CONSTITUTION: In a urinal 1 equipped with a molded and lightweight cavities 10 for keeping strength and mounted to wall surface 2 of a toilet to the front, etc., of a piping unit 3, the cavities 10 and 10 are provided symmetrically to both sides of the rear of a urine striking surface 9 hit by urine normally extend- ing from right to left direction. A smell suction port 15 is provided at least to the lower parts of the cavities 10 and 10, and the cavities 10 and 10 are con-nected to a deodorant pipe 7 provided to the rear of the urinal. In the urinal having a molded and light weight cavities 10 for keeping strength on the rear of a urine striking surface hit by urine normally and exposing a drain pipe, the drain pipe is formed of double pipe construction. A passage between the internal pipe and external pipe is connected to the cavities 10, at the same time, a deodorizing suction port is provided to the lowest part of the passage, and the cavities 10 are connected to the deodorant pipe 7 provided to the rear of the urinal 1.