The embodiment of the invention discloses a method and device for controlling lamps. A scene is divided into multiple grid points through a sensor, and the personal information in the grid points is sensed; a main control chip analyzes the personal information according to an internal algorithm to generate a first control command; a drive module drives the corresponding lamps according to the first control command. Compared with the method in the prior art that, the personal information is obtained through the coordination of multiple sensors, the method that the scene is divided into the multiple grid points through the sensor and the personal information in the grid points is sensed reduces the number of the used sensors, and therefore the difficulty of indoor wiring is reduced.