The invention relates to the technical field of water circulating, in particular to a breeding tank water circulating 
system, and provides a breeding tank water circulating 
system. The breeding tank water circulating 
system comprises a breeding tank, a 
heat exchanger, a water purifier, a side wall water collecting trough, a water collecting recovering precipitating tank, a 
tail water treatment drainage tank, a 
water storage tank and a total 
water source supply tank, wherein the water purifier can be used for purifying breeding tank 
tail water, so that circulation of the breeding tank 
tail water can be realized; the 
heat exchanger can realize heat exchange of new breeding water and the breeding tank tail water, so that the 
energy consumption for heating the new breeding water in the conventional manner is reduced; the tail 
water treatment drainage tank can effectively treat 
ammonia nitrogen pollutants in the breeding tank tail water, so that environmental 
pollution caused by direct draining of the 
ammonia nitrogen pollutants is avoided. The breeding tank water circulating system solves the problems that 
seawater plant breeding cost is high, the 
utilization rate of resources is low,and the 
ammonia nitrogen pollutants in the tail water cannot be effectively treated.