The invention discloses a method for converting a design feature model into a manufacturing feature model based on an intermediate model, which comprises the following steps of: firstly, converting the design feature model (DFM) into the intermediate model (IM); and then, converting the intermediate model (IM) into the manufacturing feature model (MFM). The invention is applied to CAD/CAM (Computer Aided Design/Computer Aided Manufacturing) integration, can realize user interaction through computers, greatly improve the design efficiency and the manufacturing efficiency of products and effectively shorten the product development period and the production cost.