Facebook and other social networking websites will abide by a new internet standards code by installing a "panic button" into their websites.
The so-called panic buttons will allow users to report any offensive, obscene and inappropriate material posted on these websites.
Tanya Byron, the government's adviser on online safety, is expected to make the announcement. The schools secretary Ed Balls and the home secretary Alan Johnson are also expected to attend the launch.
The networking site Bebo took the same step last month after mounting number of reports of inappropriate material on the website.
In addition, Facebook has set up a Safety Advisory Board to discuss online security measures.
Earlier, the charity BeatBullying found that 61.2 per cent of children had suffered cyberbullying.