The EU EuP directive enhances the electromechanical admittance threshold, and establishes new trade barriers within the European Union, while the core requirement of EuP directive is the product of ecological design idea. The key technologies of product ecological design include life cycle assessment, selection technology of raw material, structural design technology, production process design, green packaging design and green cost analysis etc.. Mechanical and electrical product manufacturers in China can achieve the core requirements of product ecological design through product structure design, ecological product identification, product ecological diagnosis, confirmation of product ecological index and ecological product assessment.