The invention relates to a template-based integrated design platform construction method, which belongs to the technical field of integrated design environments. In the construction method, centered on templates, various design rules, design experiences, design algorithms and the like are packaged into the templates to generate the single templates, and then the independent templates are combined into combined templates by a flow parser, thereby realizing knowledge reuse and quick design and provide simple means for the knowledge integration, flow integration, data integration, algorithm integration, specification integration, application integration and the like in an engineering and product design process to fulfill the aims of reducing the design cost and shortening the development cycle. A platform of the invention can be widely applied to the digital integrated design of various industrial products, effectively improve the design efficiency, reduce the design cost, reduce the workload of designers and shorten the design cycle, and has vast market prospect and high application value.