Mexico filed a complaint with the WTO saying Beijing was effectively subsidizing Chinese companies in those sectors by exempting them from income taxes, value-added taxes and municipal taxes, the organization said in a statement.
Other Chinese support that Mexico said broke WTO regulations included cash payments from government agencies and discounts on loans, land rights and electricity prices.
The brief WTO statement announcing the latest dispute did not provide details about the size of the alleged Chinese support or its impact on Mexico's trade.
Trade diplomats were not immediately available to comment on the case at the WTO's headquarters in Geneva.
"The existence of subsidies in China, which violate WTO regulations, give producers from that country an unfair advantage, distort international markets and seriously damage Mexican industry," they said.
The treaty - negotiated over a period of seven years - formed part of China's conditions for entering the WTO.
Under terms of the agreement, Mexico placed fixed tariffs of up to 1000 percent on products including textiles, shoes and toys, all vulnerable to being undercut by cheaper Chinese imports. The tariffs gradually decreased to zero by December 2011.
In January 2009, Mexico challenged grants, loans and incentives that Beijing offered Chinese companies. The United States and Guatemala filed identical cases against China at the time, but none progressed to the litigation stage.
Last month the United States launched a WTO complaint against Chinese car exports. China hit back with its own suit, saying U.S. duties targeting export-promoting subsidies themselves broke WTO rules.