The invention discloses a method for applying deterministic finite element software to the analysis of a simple or large-size complicated structure containing interval parameters. The method for applying the deterministic finite element software to the analysis of the simple or large-size complicated structure containing the interval parameters comprises the following steps of (1), establishing the geometric model of the structure; (2), inputting the interval parameters of the structure; (3), selecting a unit type, a material attribute and a boundary condition, and carrying out grid discretization on the structure; (4), getting back data in steps (2) and (3) to construct an input file of the deterministic finite element software; (5), running the deterministic finite element software to generate a vertex stiffness matrix and a vertex load vector; (6), converting the static problem of the structure containing the interval parameters into a series of sub-models of the static problem of a structure containing deterministic parameters according to a vertex solution theorem; (7), solving the sub-models by adopting a parallel algorithm, so as to obtain structural static responses of all the sub-models; (8), carrying out post processing on a result to obtain the upper bounds, the lower bounds and the mid-values of the structural static responses, and carrying out result visualization as required. By using the method for applying the deterministic finite element software to the analysis of the simple or large-size complicated structure containing the interval parameters, a succinct and effective method is provided for solving the interval analysis of the complicated structure.