Cheng Nan Street is located in the south of Dongguan, with east longitude 1 13 02' and north latitude 1 13 45'. Cheng Nan Street is about12km long from north to south and 6km wide from east to west, covering an area of 59 square kilometers. Square kilometers are low in the north and high in the south, with mountainous southeast and undulating peaks. It belongs to hilly area, and the ground elevation is130-150m. The northwest is alluvial plain, which belongs to the tributary waters of the south of the Yangtze River, with rivers and low terrain.

Cheng Nan is located in the middle of the Guangdong-Hong Kong Economic Corridor, with a superior geographical position. Guangzhou-Shenzhen Expressway, Guantai Avenue, Dongguan Avenue and Cheng Nan Science and Technology Avenue run through the whole territory, and the second, third, fourth and fifth ring roads in the urban area run through the whole region, building a developed transportation network with four verticals and ten horizontals.

Cheng Nan Sub-district Office is located in Guantai Road, Hesheng Community (east longitude 1 13 02', north latitude 1 13 45').

Cheng Nan Subdistrict 17 Community: Yuan Mei, Hesheng, Huangcun, Hengmei, Sanyuanli, Xinji, Zhou Xi, Yuanwubian, Baima, Shigu, Xiping, Keladi, Shuilian, Yayuan, Xincheng, Hongyuan and Hongfu.

Cheng Nan Street is located in the middle of the Suigang Economic Corridor, with a superior geographical position. Guangzhou-Shenzhen Expressway, Guantai Road, Dongguan Avenue and Keji Avenue run through the whole territory, and the second, third, fourth and fifth ring roads in the urban area run through the whole street, building a developed transportation network with four verticals and ten horizontals. Dongguan Central Plaza, International Convention and Exhibition Center, Conference Building, Yulan Grand Theatre, Dongguan Museum, Dongguan Science and Technology Museum, Dongguan Library and Dongguan Youth Activity Center are all located in Cheng Nan Street. At present, Cheng Nan Street has Wal-Mart, Nokia, Nestle Coffee and other Fortune 500 enterprises 12, national high-tech enterprises 13, provincial innovative pilot enterprises 1 0, 26 provincial high-tech enterprises, 26 provincial private high-tech enterprises and 72 municipal private high-tech enterprises, which are high-tech enterprises and Fortune 500 enterprises. The Dongguan headquarters of ICBC, Agricultural Bank, Bank of China, China Construction Bank, HSBC, Industrial Bank, China CITIC Bank, Minsheng Bank, Shanghai Pudong Development Bank, AIA, Ping An Insurance and many other financial institutions also gathered in Cheng Nan Street.