The experiment from 2010 to 2011 was conducted to study the effects of light qualities of red,white,blue,and yellow light gotten by different color plastic films shading from resettling stage on growth,photosynthetic characteristics and quality indexes of flue-cured tobacco with natural light as comparison.Results showed that:(1)The ratio of length and width was minimum and the leaf area was maximum for the largest tobacco leaf with red film treatment,the opposite with yellow film treatment;(2)Net photosynthetic rate,stomatal conductance and transpiration rate of function leaf in red and blue film were significantly higher than that of natural light (control),and white and yellow film were slightly higher than or equal to natural light.Red film was higher than blue film early,and blue film was higher than red film in the later period;(3)Red and blue film were helpful to improve the SPAD value of function leaf,yellow film was on the contrary;(4)Red film significantly reduced the contents of protein and total nitrogen and the ratio of protein and nicotine,improved Shmuck value in middle leaves;significantly increased the soluble sugar content and the ratio of protein and nicotine and reduced Shmuck value in upper leaves.Blue film significantly increased the content of nicotine and total phenol,reduced the soluble sugar content,Shmuck value and the ratio of protein and nicotine in middle leaves;Blue film also significantly improved the contents of protein,total nitrogen,nicotine and total phenol and the ratio of protein and nicotine and reduced Shmuck value in upper tobacco leaves.Yellow film significantly decreased the contents of protein,total nitrogen,nicotine and total phenol in middle and upper leaves,improved the Shmuck value and reduced the ratio of protein and nicotine in upper leaves.In summary,red and blue film are more helpful to coordinate and optimize tobacco growth and photosynthetic characteristic improvement.The chemical compositions of tobacco leaves after first baking are more coordinate with red and blue film treatments which are more helpful to improve the quality of tobacco leaves.