Abstract: In order to accurately simulate tobacco leaf growth and development process, and realize the accurate and controlled production of tobacco leaves, field experiments of different transplanting date treatments were carried out for two years to establish dynamic models of changes in lower, middle and upper leaf areas based on different scales using the Richards equation, and the simulation accuracy of different models was analyzed. The results showed that the dynamic model of various parts of tobacco leaf area change conformed to the characteristics of typical "S" type growth curve. The effective accumulated temperature model had better simulation effect than the growth time model in simulating the growth of the lower and middle leaves, while had poor effect in simulating upper leaf growth. The simulation accuracy of the temperature and light effect model for the growth process of each part of the leaf under different conditions was higher than the effective accumulated temperature model and the growth time model, resulting in higher universality. The final leaf area of each part of the leaves increased first and then decreased with the postponement of the transplanting date. The growth rate of the lower and middle leaves showed an accelerating pattern with the postponement of the transplanting date, while the growth rate of upper leaves showed an approximate pattern in different transplanting dates. The temperature and light effect values of each part of the leaves during the slow-growth period, the fast-growth period, and the steady-growth period were derived to provide a reference for accurate prediction of leaf growth.