The utility model belongs to the technical field of a drainage device, which relates to the design of a deodorization, insect-resistant and anti-blocking water discharge floor drain. The utility model is characterized in that the utility model is composed of a filtering cover (1), an inner funnel (4), a screw cap (6), an O-shaped rubber sealing ring (3), a water bowl (7) and a sealing gasket of the inner funnel of a casing (2). The utility model has the working principle that a rubber sealing gasket (5) is added between the inner funnel (4) and the water bowl (7), and the O-shaped rubber sealing ring (3) is added between the casing (2) and the inner funnel (4), so that abnormal odour and inserts coming from the lower side of a pipeline can be isolated. Thus, the purposes of deodorization and insect-resistance can be obtained. When the utility model is used, and discharge pressure is larger than the pressure of the sealing gasket (5), the water is discharged. When no water is discharged, the sealing gasket automatically closes. The utility model has the effects and benefits of reasonable structure, convenient installation, cleanness, sanitation, deodorization, insect resistance, blocking prevention and indoor air pollution prevention. The utility model is an ideal device for discharging water for a living room.