Abstract: After the victory of the Chinese People's War of Resistance against Japanese Aggression, the Chamber of Commerce in
Yunnan has been gradually declining. In order to save business and commerce from the overall crisis, the Chamber of Commerce
actively participated in the local political and democratic movements, hoping obtain greater living space. At the same time, on the eve
of the liberation of Yunnan, in order to gain favorable support and successfully complete the peaceful liberation cause of Yunnan, the
Communist Party of China（CPC）and the underground organization of CPC also actively united the progressive people in the Chamber
of Commerce, trying to gain support from the industrial and commercial circle so as to achieve the peaceful liberation of Yunnan
province.

Key words: Kunming Chamber of Commerce, Yunnan People's Liberal Security Committee, revolutionary support