With the development of Internet of Things technology and the people’s pursuit of high-quality life, the development of smart homes is becoming more and more diversified, paying more attention to reducing costs, increasing benefits and user experience. For the scene where lights and images change synchronously in smart homes, the current technology used in related products is a solution for external hardware processing equipment, which has problems such as high hardware cost, complex configuration, only supporting external HDMI sources, etc.. Combined with the above situation, this paper proposes a smart home lighting linkage system that is suitable for market demand, easy to promote, apply and implement. Through ZigBee, Bluetooth networking technology, color segmentation technology, signal processing technology, etc., this solution designs and implements an adaptive lighting linkage smart home system based on the color change of the TV screen. The scheme has been proved to have the characteristics of low cost, good experience and stable effect in practical application, and achieved the expected research goals.