The invention discloses an intelligent lamp turning off system, belongs to the technical field of intelligent lighting lamp turning off and provides the intelligent lamp turning off system capable of sending an alarm signal to remind people to come back and turn off the lamp when people leave a house without turning off the lamp. The adopted technical scheme is that the intelligent lamp turning off system comprises a main control unit, a human body sensing unit, a brightness detection unit, a sound and light alarm unit and a power supply; the main control unit is respectively electrically connected with the human body sensing unit, the brightness detection unit and the sound and light alarm unit; the power supply supplies power for the whole system. The main control unit comprises a data processing module and a data storage module. The intelligent lamp turning off system is suitable for the technical field of intelligent control.