Most of present product module partition methods are based on product function partition and use fuzzy clustering algorithm, but these methods are not only complex in implementation but also difficult to meet the requirements of product development oriented to product lifecycle. By analyzing interactive effects of product components in product lifecycle, a new method for product module partition is put forward. Firstly, LSSVC which has fast calculation speed and high accuracy is used to illustrate the generating process of modules, so several module partition schemes are obtained. Secondly, module partition schemes which are got by LSSVC and other methods of module partition are evaluated to get the most reasonable module partition scheme. Finally, widely-used speed reducer as an example is provided to illustrate the validity and rationality of the proposed approach.