The activity patterns of the Badgers (Meles meles) reintroduced from Shandong to Shanghai was observed during November 2010 to February 2011. The results showed that in winter, these badgers mainly fed on meat and acted once every 2-4 days. The duration of the activity was short. Activity of reintroduced badgers depended on temperature in seminatural area. The reintroduced badgers can adapt to artificial condition and overwinter smoothly.