The invention provides a supplementary lighting lamp control system and method. The supplementary lighting lamp control system comprises two supplementary lighting lamp driving devices, a control device and a switching device, wherein the two supplementary lighting lamp driving devices are used for driving two types of supplementary lighting lamps, each supplementary lighting lamp driving device is used for driving one type of supplementary lighting lamp, the control device is used for controlling outputs of the two supplementary lighting lamp driving devices by complementary control on a grounding resistor with a pin of the two supplementary lighting lamp driving devices so that the integral brightness of all supplementary lighting lamps are basically unchanged, and the switching device is used for forbidding the other type of supplementary lighting lamp driving device to perform switching of the two types of supplementary lighting lamps when one of the two types of the supplementarylighting lamps reaches preset brightness. With the supplementary lighting lamp control system and method provided by the embodiment of the invention, the brightness of the image shot under alternativesupplementary lighting of the two types of supplementary lighting lamps can be maintained uniformity, and subsequent algorithm analysis and processing implemented according to the shot image are facilitated.