The use of virtual reality technology in limb rehabilitation training could overcome the limitations of traditional rehabilitation methods, realizing the safe, comfortable and active rehabilitation training. In this paper, a rehabilitation training system based on virtual reality was designed for the recovery of impaired hand functions and evaluated in healthy projects. The training system was developed by using an interactive device, a human-computer interaction software and the virtual environment. The 5DT Data Glove 14 Ultra was used as the interactive device. The human-computer interaction software implemented with Visual Studio 2012 consisted of user management module, data collection module, classification module and real-time gesture recognition module. For the virtual environment (VR), a flash game was developed and used, which could be controlled by hand gestures through the communication between the VR environment and users. The proposed training system could be beneficial in improving the outcome of the hand function rehabilitation. Moreover, the use of flash games could improve the enthusiasm and initiative of the users effectively in rehabilitation training.