Abstract: The viscous hydroplaning of tread was modeled and analyzed. The model is based on average flow model which takes the squeeze action, hydrodynamic action and surface roughness of road into consideration. The effect of drainage of tire tread pattern is also taken into account. Through mathematical analysis, the effects of some different tire tread patterns were compared. In-depth analysis in pressure distribution of tire tread unit was also carried out. The results show that adhesion performance of cross pattern tire tread is better than those of other tire tread patterns analyzed in this article. Therefore theoretical basis is provided for tire tread pattern design on anti-hydroplaning tread.