To provide complete and powerful function of editing the features in the part model, the feature-based edition is used to solve it. It provides easy user interface and the record of edition for users to change the data when errors are ocurred. This paper emphasizes on the development of feature-based design for editing the features. The system with the multiple-tree architecture provides the flexibilities for designers to edit the part model. This paper also provides the data transferring in the collaborative system. Therefore, the designers can share design data and work together by Internet with others. The system was implemented using Java language. The main kernel used to construct model is based on the library of Spring Solid System.