The utility model discloses an intelligent switch capable of automatically adjusting the number of illuminating lamps according to illuminance, which is characterized in that the intelligent switch mainly comprises a panel (1) and a control module (5), wherein the panel (1) is provided with an illuminance adjuster (3), a single-open switch (2) and an illuminance sensor (4); one end of the single-open switch (2) is connected with a mains supply, and the other end thereof is connected with the power input end of the control module (5); a plurality of power output ends of the control module (5) are respectively connected with the controlled illuminating lamps (6); and the control input end of the control module (5) is respectively and electrically connected with the illuminance adjuster (3) and the illuminance sensor (4). The utility model has the advantages of simple structure, convenient control and easy implementation; in addition, the number of the illuminating lamps automatically switched on and controlled by the single-open switch can be adjusted according to the set illuminance, the wiring of the whole place is simple, the energy is saved, and the installation and using costs are lowered.