Of its estimated 1.3 billion population, China has roughly 123 million Internet users, most of whom are young people.
Reports about pornographic websites have increased from around 300 to nearly 700 every day, making up 31 percent of all reports received by police during this period, according to the Ministry of Public Security (MPS).
Wu Heping, spokesman of China's MPS, had said recently that preliminary statistics show that nearly 80 percent of juvenile delinquents have been lured into crime by evil content on the Internet.
"In a high proportion of cheating, rape or robbery cases involving young people, the Internet is a factor," Wu said.
Last week Chinese Police arrested a 21-year-old student for running five pornographic websites with 210,000 registered users. Police also announced that they had closed 1,450 porn websites and deleted more than 30,000 obscene messages online since the launch of the campaign.
The six-month campaign by the MPS and nine other government departments plans to crack down on illegal online activities such as distributing pornographic materials and organizing cyber strip shows, with a goal of purging the web of sexually-explicit images, stories, and audio and video clips.
The campaign also targets illegal online lotteries and contraband trade, fraud, and "content that spreads rumors and is of a slanderous nature."