Using the conventional observation data and FNL data, the interaction between binary typhoons Tembin and Bolaven is analyzed. The results show that the path of Tembin was complicated, while that of Bolaven was relatively stable. For the cyclotron period of Tembin, through the introduction of Rankin vortex theory model, the mutual rotation angular velocity between binary typhoons caused by Fujiwara effect is quantitatively analyzed. It can be seen that the Fujiwara effect between binary typhoons Tembin and Bolaven played a decisive role to the steering of Tembin, while the guidance of the environment field had less effect. Through force analysis, find that the total pressure had less effect on the steering of Tembin, but obvious effect on the moving path of Bolaven. Bolaven had stronger strength and larger volume, which is the main cause of Fujiwara effect between binary typhoons Tembin and Bolaven.