Abstract:Light can regulate plants‘ growth and morphogenesis, and adapt plants to environments via photosynthesis and phytochrome effects. In addition, light may affect primary and secondary metabolism of plants, and light is important in the production of secondary metabolites in plants. Cinnamomum pauciflorum is a perennial evergreen plant species, its leaves have Cinnamomum pauciflorum oil, in which safrol takes the proportion of more than 95%. The paper analyzed the effects of light intensity on morphology, wat...