At first, this paper introduces some features about Virtual Reality, which includes concept, practical use, basic character, etc. Then it turns to one of its branch-Virtual Laboratories. Virtual Laboratories developed rapidly in recent years, and it will have great effect on education area. This paper mentions about many advantages compared with traditional laboratories, the supporting technique, practical significance, etc. Later this paper mentions about a practical example in China. "Computer communiction" is a required curriculum in most universities, so "Virtual Communicating Experimental System" is developed to help teaching in TianJin Normal University.