As Cambodian society keeps developing, the number of social media users, especially Facebook users, also keeps going up. Hence, quality news is needed, so that people who are on the internet can be informed correctly and properly. As the problem grows bigger and bigger, what can be done at the professional level? What can professional journalists do to combat fake news? And how can people, from the grassroots level, protect themselves from fake news? This paper suggests that social media itself can be used as a tool to spread media literacy knowledge, in the form of Facebook campaigns that educate people on how fake news or disinformation is spread.