| In recent years, along with the popularity of Internet, and the extensive use of broadband technology, Various late-model Internet apply is unceasingly coming out, and changes quickly our digital life style. VOD,IPTV,VOIP,Internet-based games,network education,network videophone etc, they play important roles in the network life of the Chinese. Among them, in recent years ,the development of VOD(Video-on-Demand) is the most fast, and VOD affects Chinese broadband business. The technique of VOD is composed of television technique, computer technique,network communication technique,multimedia technique,Image compression technique etc. VOD is Chinese netizen's most favorite business. It will be the important component of the future information highway, and it will be the soul of the future broadband business.IP network is changing gradually into a network with value-adding function. The Internet-Base business(particularly like VOD business which request realtime processing and bandwidth severely) bring challenge to Internet. along with the fast fierce development of the VOD business, along with the increase of VOD customer and the increase of network flow loads, will bring some problems like the high load of network, the slow-down of network responds, the shortage of the network bandwidth, the increase of investment. VOD Network Operator must take seriously and solve these problem. For solving problem, providing excellent VOD serve, dissolves thoroughly the problem which happen during VOD, increase VOD customer's degree of satisfaction, We need to measure, manage, evaluate, analyzed every kind of QOS parameter. We need to comprehend and master VOD parameter subset, to achieve VOD system QOS control. The improvement of VOD parameter, providing excellent VOD serve, is the aim of the VOD Network Operator.This paper first introduced the business of VOD of characteristic in brief, then did the simple introduction to the characteristic of QOS, and analyzed current QOS study of every country, discussed the measure method of QOS key parameter. We establish a VOD measure Platform, obtain the data to analyzed. We study how the QOS parameter influence VOD business, and find out the methods to improve VOD. |