To provide a sprinkler fire extinguishing equipment installed in a cold district preventing the freezing of fire extinguishing liquid inside the pipes in the winter and filling the fire extinguishing liquid in the secondary pipes in seasons without the danger of the freezing.

In this sprinkler fire extinguishing equipment, the valve body 2 of a flowing water detector 1 is normally closed by a locking mechanism L, a fire sensor S or a temperature sensor T is installed near a sprinkler head H and dire signals are generated and the locking mechanism L is released by the operation of the fire sensor S or the temperature sensor T. The supply and discharge of fluid inside the secondary side piping 52 are controlled manually or by detection signals from the temperature sensor T.