The invention discloses a construction method of an adaptive dynamic design platform aiming at a mechanical device. The construction method mainly comprises the steps of: erecting an adaptive service platform suitable for a target mechanical device, performing tracking dynamic design on a target product, and performing variable optimization design on a target model machine; and erecting a PDM (product data management) service platform as a link of the innovative service integration platform to couple the adaptive service platform, the tracking dynamic design and the variable design into a whole. The construction method can be promoted in other design and manufacturing industries, the prevailing significant problems such as long cycle of design and production, instable design quality, large amount of repeated work of personnel and high cost can be solved, experience of design and manufacturing can be accumulated and repeatedly used, reconstruction and remanufacturing can be realized, waste of resources can be reduced, seamless integration of demand conversion, product design, analysis, simulation and manufacturing can be realized ultimately, the structure of the target product can be optimized, the performance of the target product can be stabilized, rapid transformation can be realized, and the core competitiveness of enterprises can be enhanced.