The invention discloses a lamp control system for embedding a switch into a watch chain. The system comprises three parts, namely a control terminal located on the watch chain, a first controller and a realization device of the first controller and a second controller and the realization device of the second controller, wherein the first controller and the realization device of the first controller are used for regulating and controlling the light intensity; the second controller and the realization device of the second controller are used for regulating and controlling the light color; the current is regulated by a transmission modulator to realize regulating and controlling of the light intensity; the color is regulated and controlled by a shading plate to realize regulating and controlling of the light color; all operations are based on instruction content sent out by the control terminal; and the first controller and the second controller respectively analyze the received instructions and finish corresponding response operations according to the instruction content. According to the control system disclosed by the invention, the fixity of trigger development of an existing home lighting system and the limitation that the light cannot be regulated and controlled are overcome; the wiring complexity is relatively well relieved; and the control system is relatively convenient to use by a user.