The application of projection lights has always been concentrated in the life scenes we are familiar with, such as night scenes of high-rise buildings and trees. It is based on human needs to design lamps. Emotional lighting is based on human emotions, creating a mood-like lighting environment from a human perspective. The mood lighting is different from the scene lighting. The mood lighting is a dynamic lighting method that can meet the spiritual needs of people and makes people feel sentimental; while the scene lighting is static, it can only emphasize the needs of scene lighting, but cannot express Human emotions. Emotional lighting includes four aspects: one is environmental protection and energy saving, the other is health, the third is intelligence, and the fourth is humanization.