The campaign, which will last until August, will be carried out by eight government agencies, including the Ministry of Public Security, the central bank and the Ministry of Industry and Information Technology.
Online gambling "has caused large cash outflows from the country and seriously disturbed social and economic order," said a statement posted on the public security ministry's Web site last week.
The campaign aims to "bust a number of syndicates from home and abroad that collude to organize gambling activities on the Internet and severely punish the illegal rings," it said.