The utility model discloses a coal pile water injection temperature measuring device, including water injection device and temperature measuring device, water injection device includes and is equippedwith external water filling port on the shell of double metal hollow tube water injection end by an inclosed double metal hollow tube, and the double metal hollow tube temperature measurement end outside is equipped with the heliciform fin, and double metal hollow tube outer tube middle part is equipped with the delivery port, temperature measuring device includes taper metal -back and thermocouple, and the thermocouple is located the taper metal -back, and the taper metal -back is installed at double metal hollow tube temperature measurement end tip, wears to be equipped with the wire in thedouble metal hollow tube tube core, and wire one end is connected with the thermocouple, and the wire other end is worn out the water injection end of double metal hollow tube and is connected with external connection port. The utility model discloses can detect the coal pile temperature and to coal pile water injection cooling, reduce coal pile's self -heating temperature through the water injection, fill the coal pile crack, water blocks up the leakage air passageway with broken coal formation slurry simultaneously, prevent oxygen get into with the evaporation of coal body moisture, the oxidation and the spontaneous combustion of suppression coal.