The China (Nanjing) International Software Product Expo (Nanjing CIS) is sponsored by the Ministry of Information Industry of the People's Republic of China, the Ministry of Science and Technology of the People's Republic of China, the National Copyright Administration of the People's Republic of China, Jiangsu Provincial People's Government.

It is held in September every year in Nanjing, a city that is gaining fame for its hi-tech IT industry. This expo which has been ranked among the "China Top 10 most Influential Expo Brands" by the China Exhibition Summit for two consecutive years, so it is among the top software expos boasting the highest standard, biggest scale and best effect in China.