China's consumer price index, also the main gauge of inflation, grew 1.3 percent year on year in October.
The weaker-than-expected reading slowed from the 1.6-percent gain in September and 2-percent in August.
NBS statistician Yu Qiumei attributed the slowdown to falling pork and vegetable prices due to ample supplies.
Food prices, which account for nearly one-third of the weighting in China's CPI, went down 1 percent from a month earlier.
Meanwhile, China's producer price index, which measures wholesale inflation, plunged 5.9 percent year on year last month.
It is the 44th straight month of decline due to continuing weak market demand.
For more on this, I earlier spoke to Gao Shang, commodity analyst with Guantong Futures.