Jn this paper, the numerical simulation of the latitude position variation of subtropical high ridge line is made by using the two dimensional zonal average models. When the solar radiation heating is considered in the model, the jumping process of the subtropical high ridge takes place during its seasonal northward movement. There would be no such a jumping process if the radiation heating is absent. So, it may be concluded that the basic character of seasonal movement of subtropical high depends mainly on the solar radiation heating. Jn this paper, the numerical simulation of the latitude position variation of subtropical high ridge line is made by using the two dimensional zonal average models. The jumping process of the subtropical high ridge takes place during its seasonal northward movement. There would be no such a jumping process if the radiation heating is absent. So, it may be concluded that the basic character of seasonal movement of subtropical high depends mainly on the solar radiation heating.