Abstract: To study the effects of root zone temperature and light intensity coupling on growth and development of tomato in solar greenhouse, root zone heating, 2 light intensities and 2 light qualities for total 10 coupling treatments were set, including no root zone heating and no lighting treatments as CK. The results showed that: the root zone heating and supplemental lighting could promote the growth and development of tomatoes significantly and advanced the marketing time and promoted the nutritional quality; among them; the light intensity of 40 μmol/(m2·s) could significantly improve the growth and yield and the quality of fruit; and the value of light quality (red:blue 3:2) treatment could promote the growth and yield of tomato, however, when the light quality was red:blue 1:1, it was more favorable to an earlier coloring of the fruit, and could increase the sugar degree of the fruit. In addition, compared with the coupling of root zone heating and light quality, the coupling of root zone heating and light intensity could promote the growth and yield of tomato. In conclusion, the coupling of root zone heating and the light intensity of 40 μmol/(m2 · s) and the light quality of red:blue 3: 2 is in line with the production need of tomato in solar greenhouse.