Network technology has changed the face of the whole of human society, from everyday practice and interaction patterns of social structure and institutional arrangements of society are tremendous changes taking place. But at the same time, pollution of all kinds of networks have been a direct threat to the stability of society Information Network of the pollution is the largest space of information pollution. Including the malicious dissemination of harmful information mainly refers to pornography, gambling, drugs and other information. Biography of the information contained in any web site directly is yellow, yellow software. Information is contaminated, the main victims of the younger generation ● purification of information in cyberspace is not only related to

personal privacy, property, safety, etc., but the younger generation is directly related to the growth of the problem and, therefore, issues related to the national development strategy and national security issues. Management at the macro, it is necessary to strengthen the network of legislation, establishing and perfecting the legal system of the network society, network society to make laws Ministry of Public Security, the Central Propaganda Department has recently decided to departments, etc., from April this year, the organizations in the country according to the six-month special campaign against Internet pornography action to address this increasingly serious pollution problems of network information to provide an effective grasp hand, the effective purification of information in cyberspace has become people's expectations. The Internet by human hands and use while it is only a maximum of 30 years, but the network technology has changed the face of the whole of human society, from everyday practice and interaction model to social structures and institutional arrangements have dramatic changes occurred. Early birth of the network technology is the monopoly of developed countries in technology, now, the network has been linked to the whole world. At the end of 2006, the world's Internet users has reached 1.1 billion, the United States the largest, followed by mainland China has reached 137 million, might well be described as a "pre-old Yan Wang Tang-Chou Hsieh, flying into the homes of ordinary people." Network to rapid, convenient, cheap, etc. have greatly enriched the people's social and cultural life and spiritual life. But at the same time, the network has a direct threat of pollution to the social stability and poison people, especially young people. Therefore, in today's Internet Age, we must purify the Internet space to build a new social security to maintain the defense system. At present, the largest information network space information pollution is pollution. Network pollution mainly as follows: First, the malicious dissemination of harmful information mainly refers to pornography, gambling, drugs and other information. Biography of the information contained in any web site directly is yellow, yellow software. According to "illegal and unhealthy information center report" website, the users have to report and found to pornographic websites on the Internet as many as 300 more than, as has not been revealed by more than that. Pornographic websites as a result of almost all charges, whether it is "friends club" yellow watch movies, or online "communication" community or QQ, or through phone charge cards to buy a special "point" of settlement, in order to attract users extension of time online, some sites have also been taken返点incentives. At the same time, the number of a 5,000-line pornographic websites, a monthly income of at least a few hundred thousand dollars. Such a windfall, it is no wonder a number of lawless elements will tend if?. The second is to amend health information, including the deliberate intention to increase the deletion of useless information and useful information, so that health information and even distorted beyond recognition. In this case, the information the user is not only more time to pay the price, but also forced to pay more of the purchase cost. He is also required for the purchase of health information, but also had to pay for useless information, but also to filter out useless information. Deliberately increase the useless information to make health information while it is difficult to identify, but also the health information stored in them, after all, and those intending to cut useful information so that health information is often distorted. Information users do not know as a result of health information has been deleted, the result of this information in support of the research results will inevitably lose its scientific. Third, the production and dissemination of spam. At present, the spam messages to spam messages and the mandatory visit two most common. As a result of spam in general through the broadcast of the mass, the user can not be refused, so the user's normal to receive serious disruptions, users have to pay for this enormous costs and the spirit of the time cost. Similarly, the mandatory information views, but also in the viewer without any knowledge of the circumstances, a site set your browser's default home page, automatically; or the website without permission to add favorites surfers in ; or allow your browser to always appear the title of a web site or advertising, so that the viewer automatically reboot after a dial-up access to the site, so viewers have to pay the cost of it. What is worse is that manufacturers often refuse information with special purpose. In order to profit or illegal; or disseminate reactionary remarks to affect political stability; or spread rumors, so that fear of a society. Fourth, tampering and theft of private information. Today, businesses have Internet access, e-government, e-commerce, electronic banking, such as people's daily lives have become an indispensable thing, followed by information privacy have been moved online. In other words, people in the enjoyment of the enormous network of convenient, it also had to bear the personal information including bank deposits, such as the Internet has been the risk of theft. At present, the networks continue to erode the virus management software, hackers are tightly pegged to a variety of private information. Can be seen from time to time information security community in high-risk status. Network information is a serious pollution, the direct victims are the users of network information. The vast majority of Internet users are young people. According to China Internet Network Information Center (CNNIC) 2007 years 1 was released the 19th China Internet Development Report ,18-24-year-old Internet users reached 35.2 percent, also the age of 18 accounted for 17.2%. These two age groups the number of Internet users more than half of the total number of Internet users. In other words, the information is pollution, the main victims of the younger generation. Therefore, the purification of information in cyberspace is not only related to personal privacy, property, safety, etc., but the younger generation is directly related to the growth of the problem and, therefore, issues related to the national development strategy and national security issues. For information network must adhere to the "positive development, strengthen management, WTO, in order to use" principle, China actively build a network of times a new system of social security. Management at the macro, first of all, it is necessary to strengthen the network of legislation, establishing and perfecting the legal system of the network society, network society to make laws. Some developed countries and regions as a result of early development of the Internet, the network started fast legislation, such as the European Union in 1995 on the promulgation of the "Protection of personal data in well-organized" and a series of laws to regulate the network of community Internet Age acts in order to safeguard social security. Second, we must establish a network of ethical standards of conduct so that people can accept the network of network behavior and moral oversight. If the language used in e-mail format, communication network protocols, anonymous e-mail transfer protocol such as the development of these agreements was very specific, and even letter case, information should be short, the subject of focus, e-mail signatures to have the detailed provisions of the details. These rules should also include a variety of network behavior from the responsibility of the main network, site, network service providers, network product manufacturers, network associations, government departments, agencies such as the review of rules of conduct. Once again law enforcement officers to improve the quality of the network. The formation of a network capable management team to improve the quality of the network of law enforcement contribute to social civilization and stability. In the micro-management, we should first do a good job "of young people safe Internet" building. Secondly, to strengthen the network of cultural market management, network culture market in an orderly manner under the strict supervision of the operation. Once again, is strictly prohibited, as well as all kinds of pornography, gambling, drug information feudal cult widely disseminated on the Internet at the same time, it is necessary to severely crack down on the phenomenon of cyber-crime, and safeguard the security of the network environment. To achieve this goal the key is to actively promote the Internet real-name system. Purification of information in cyberspace without delay, it is imperative to create a healthy network environment, which is related to the growth and development of young people the practical requirements as well as social harmony and national security required.