This paper discuss the relation between Taylor's formula and partial differential equation. Taylor formula iteration method can resolve partial differential equation. u(x, t)be expanded at t = 0or t = 1by Taylor formula Coefficient of Taylor formula ut(x; 0),utt(x; 0). . . can be expressed by partial differential equation. The method can solve nonlinear differential equation.Generalized Taylor's formula can solve fractional partial differ- ential equation. The method is very important way that resolving partial differential equation. The method also can resolve those equations from [1]-[9]. This article refers to the literature [10]. Taylor formula iteration method belong to logical thinking.