Parametric design system for framed wooden box was developed based on Solidworks by Visual Basic. Furthermore, a Web based CAD system was implemented by combining PHP with MySQL database. The framework of the system and key technologies for building this system were discussed in detail. When the user inputs the basic parameters of the wooden box with web-browser, the system will generate 3-dimensional models and 2-dimensional drawings, which can be browsed and downloaded using web clients, and different users can share this CAD system with Internet.