It is difficult to construct 10 000 t jacket of offshore oil and gas production platform, which is of high technical requirements and operation risk. The 10 000 t jacket construction of an offshore oil and gas field development project is taken as an example. Three main construction steps, site region block layout, module structure piece construction and module structure piece hoisting closure, are expounded, and the practical application effect is introduced, which can provide the technical support for the design and construction of the similar jacket or large foundation structure at home and abroad.