The invention provides a water circulating system for a bathroom. The water circulating system comprises the bathroom and a circulating pipeline, wherein a floor drain is arranged at the bottom of the bathroom; the floor drain is connected with a water purifier; the water purifier is connected with one end of the circulating pipeline; a spraying nozzle is arranged at the other end of the circulating pipeline; the spraying nozzle is arranged at the top of the bathroom; the circulating pipeline is provided with a water pump; a first cold water pipe, a second cold water pipe and a water drainage pipe are further connected with the outer part of the circulating pipeline; the second cold water pipe is provided with a water heater. The circulating pipeline is provided with a first solenoid valve; the first solenoid valve is arranged on one section of the circulating pipeline between the first cold water pipe and the second cold water pipe. The first cold water pipe is provided with a second solenoid valve. The water drainage pipe is arranged on the circulating pipeline between the water pump and the water purifier. By adopting the structure above, hot water used in a showering process can be circularly utilized, so that on one hand, wastes of water resources are reduced; on the other hand, heat in the hot water is sufficiently utilized and energy consumed for heating cold water repeatedly is reduced.