Abstract: CVE makes collaborative feature modeling among multi-users possible, but the token-passing method that most of current collaborative feature modeling systems use as its collaborative strategy makes the design inflexible and inefficient. Based on the analysis of feature operation in collaborative environment, we propose a new method to solve the conflicts and define a process for non-locked multi-user collaborative design. Based on this method, we have implemented a prototype system integrating C++, Java3D and VML, CORBA technologies to achieve flexibility and efficiency in CVE for feature based modeling.