Abstract: As an important element of urban garden, color-leaved plants have significant economic and ecological value. In this study, we comprehensively analyzed the seasonal classification of color-leaved tree species in China, explored the influence mechanism of genes and environmental factors on the natural discoloration of color-leaved tree species, and evaluated the effects and effects of different physical and chemical measures on leaf discoloration. It was found that fertilization methods with low nitrogen, low phosphorus and moderate potassium, soluble sugar, acidic chemical reagents and ethephon had a positive effect on the leaf coloring, while gibberellin played an inhibitory role. Physical pruning promotes leaf discoloration by influencing the nutrient distribution of plant photosynthesis. The effect of moisture on leaf color is complex and needs to be further studied. This study provides a new perspective for the theoretical study of leaf discoloration of color-leaved plants in China, provides a scientific basis for improving the ornamental value and ecological benefits of color-leaved plants, and helps to improve the livability of urban ecological environment.