The utility model discloses a temperature measurement device for stator and rotor windings of a water-wheel generator. The temperature measurement device comprises an upper computer disposed outside a wind cover of the water-wheel generator. The temperature measurement device is characterized in that the temperature measurement device further comprises wireless temperature transmitters respectively installed on a stator and a rotor of the generator, an installation box installed on the inner wall of the wind cover, and wireless receiving displays installed in the installation box; and the upper computer is connected with the wireless receiving displays through communication cables. Through cooperation of the wireless temperature transmitters, the wireless receiving displays and the upper computer, effective on-line long-term continuous wireless temperature measurement can be performed on the stator winding and the rotor winding, and temperature measurement precision and reliability are guaranteed.