A battery-free induction water faucet with a temperature display function comprises a water faucet body and a control box, a
solenoid valve, a cold water inlet piece, a hot water inlet piece and a
control circuit board are arranged in the control box, an
inductor is arranged on the water faucet body, the
inductor and the
control circuit board are connected with the
solenoid valve, a constant temperature bar, a hydroelectric generator, a temperature sensor and a temperature flow displayer are arranged, the constant temperature bar and the hydroelectric generator are arranged in the control box, the cold water inlet piece and the hot water inlet piece are respectively connected with the constant temperature bar, the constant temperature bar is connected with the water faucet body through the
solenoid valve and the hydroelectric generator, the hydroelectric generator is connected with the
inductor, the temperature sensor, the
control circuit board and the temperature flow displayer through power lines, the temperature sensor and the temperature flow displayer are arranged on the water faucet body, and the temperature sensor is connected with the temperature flow displayer. The power supply of the battery-free induction water faucet achieves self-sufficiency, environment is protected, energy is saved, and the battery-free induction water faucet is in a non-touch type, novel and practical and can display the temperature and the flowing speed of flowing water in real time.