One outbreak occurred on a farm of 210 pigs in Yanting county in the southwestern province of Sichuan, killing 26.
Another case was confirmed in a district of the city of Jixi in the northeastern province of Heilongjiang where 24 pigs died on a farm of 84 pigs.
China has reported about 90 cases of the disease since it was first confirmed in the country in early August.
More about: China swine-fever