BEIJING -- China's pork prices dropped 0.2 percent for the week ending July 24 from the previous week, the Ministry of Commerce (MOC) said Tuesday.

The previous week-on-week drop occurred in the week ending April 10 with a 0.1-percent decline, according to reports listed on the MOC website.

High pork prices have become a big concern for the nation as the consumer price index, the main gauge of inflation, shot up to a three-year high of 6.4 percent last month, driven by surging food prices.

Data from the National Bureau of Statistics showed pork prices in June surged 57.1 percent year-on-year.

Meanwhile, 18 types of vegetables underwent an average price drop of 1.5 percent last week from the previous week. Eight types of aquatic products climbed 1.4 percent in wholesale prices week-on-week.

Prices of mutton and beef rose 1 percent and 0.6 percent, respectively. Egg prices also climbed 0.6 percent.