The invention relates to a drinking water system for a chicken farm and discloses a drinking water system for poultry. The drinking water system for the chicken farm comprises a boiler, a heat exchange device, a water pump, a sensor, a water storage tank and a drinking water device. All the devices are connected through water conveying pipes. Water is heated to be boiled through the boiler and conveyed into the heat exchange device, boiled water undergoes heat exchange with cold water through a copper pipe, and therefore the boiled water is changed into warm water, the temperature of the cold water is increased, and the water is conveyed into the boiler to be heated. Thus, the driving water system for the chicken farm saves energy, reduces emission and saves manpower.