Wind-proof cap for gas water heater

The utility model discloses a wind-proof cap for gas water heaters. A box body is mainly composed of a front plate 10, a back plate 20, a right lateral plate 30, a right lateral plate 40, a left wind guide plate 50, a right wind guide plate 60, a top plate 70, an air exhaust pipe 80, a water guide plate 12, etc. The bottom of the box body is provided with an opening. Each plate surface is a complete flat plate. The utility model is characterized in that the left wind guide plate and the right wind guide plate are formed by the both sides of the top plate downwards and outwards extend at the inclined direction, and the extended length exceeds the left lateral plate and the right lateral plate; the top edges of the left lateral plate and the right lateral plate upwards and inwards extend into a left lateral flow assisting plate 31 and a right lateral flow assisting plate 41 at the inclined direction, which causes the wind guide plates and the flow assisting plates to form wind guide spaces 32 and 42; the water heater after assembled forms air flow spaces 101 and 102 which are communicated with wind guide spaces. The structure prevents the turbulent flow from generating.