The campaign, which runs from February to April was launched by National Office Against Pornographic and Illegal Publications, in collaboration with the Cyberspace Administration of China (CAC), the Ministry of Public Security among other departments.
The anti-porn authority in Beijing has probed several Internet video player service providers for spreading lewd videos, including Ingkee, Doshow and Huajiao, sate-run Xinhua news agency reported.
In other cases, two popular video sharing mobile applications Xiaokaxiu and Miaopai were placed under investigation for providing porn videos, it said.