The invention relates to a product design process management method. The method comprises the steps that: S1, a design task is received; S2, a task type is judged, if the task type is a product changetask, a step S201 is performed to change management, then a step S10 is performed, and if the task type is a product design task, a step S3 is performed; S3, whether a new product is to be developedor not is judged, if the new product is not to be developed, the design task is processed as a conventional / special order in a step S301, then a step S8 is performed, and if the new product is to be developed, a step S4 is performed; S4, product components are newly established, and basic information is maintained; S5, a BOM is built; S6, a product document is designed; S7, a process route is compiled; S8, a product is approved and released; S9, design data are issued; S10, a process design process is managed; and S11, trial production and production are executed. The method has the advantagesof high interactivity, high efficiency and traceable approval process.