BEIJING - China's Ministry of Commerce received 203 antitrust filings in 2011, up 49 percent year-on-year, and launched investigations into 185 cases, a rise of 57 percent, a senior official said Friday.

The ministry's anti-monopoly bureau reviewed 168 cases last year, up 53 percent year-on-year, and imposed conditions on four cases, Vice Commerce Minister Gao Hucheng said at a national work conference.

The bureau has reviewed 382 cases, approved 371 cases, blocked one and imposed conditions on ten since the country's Anti-Monopoly Law took effect in 2008, Gao said.

He said the bureau will work to promote the country's economic restructuring in 2012, while strengthening publicity for anti-monopoly laws and enhancing law enforcement.