Beijing has shut down more than 60,000 pornographic websites as part of a year- long crackdown on lewd online content, as it moves to tighten control over the internet.
Authorities have jailed 58 people for at least five years in the crackdown on lewd online and mobile phone content that was launched last December.
China has the world's largest online population - it rose by more than 20 percent to 450 million users this year - and says it censors the internet to curb "unhealthy" content including porn and violence. But critics counter it is mainly trying to prevent the posting of information that challenges the Communist Party.
Still, emboldened web users have made the internet a new forum to, among other things, express opinions in a freewheeling way rarely seen in the strictly controlled traditional media.
Wang Chen, minister for the press office of the State Council, said the crackdown will continue.
"This special operation to rectify online pornography and vulgar content has not come to an end - this is a protracted war," Wang said.
Beijing is also restricting internet phone services in a move that may affect thousands of businesses and individuals making cheap calls via web-based communications companies such as Skype.
"We are carrying out with relevant authorities a campaign to crack down on illegal Voice over Internet Protocol phone services," the Ministry of Industry and Information Technology said.
Vice minister Xi Guohua said only leading state-owned telecommunications operators are licensed to provide internet phone services linking telephones and computers.
That means some computer-to-phone services provided by firms including Skype, which are popular in China due to their low rates as compared with the nation's leading telecoms firms, could be banned under the ministry's new rules.