The invention belongs to the field of water conservancy and hydropower constructional engineering and space flight and aviation field thin-wall structure dynamics characteristic analysis and load bearing design, and particularly relates to a thin-wall structure dynamics thermal performance prediction method based on staggering iteration coupling technology. The method comprises the steps of establishing a thin-wall structural design model based on limited units according to physical mechanical properties of a thin-wall structure, constraint conditions of the thin-wall structure and fluid loads obtained through a first step calculation, using a designed working condition flow, namely flow speed as an inlet boundary condition of fluid calculation, carrying out thin-wall structural dynamic characteristic analysis through the staggering iteration coupling technology, and then providing a basis for structure safe design. Compared with original material mechanics methods and a one-way coupling method, the thin-wall structure dynamics thermal performance prediction method is remarkable in improvement of accuracy and high in calculation speed, and enables fluid-structure coupling to step on practical engineering application from theoretical research.