Qi'ao Island is 13 kilometers northeast of Xiangzhou, 13 kilometers west of the Pearl River Estuary, 13 kilometers east of Neiyu Island, opposite Humen in the north and1.2 kilometers south of Tangjia mainland. The island area is23.8 square kilometers. The household registration population on the island is 2,189 (2016). Geology is the main body of granite structure, the surface layer is yellow sand clay, there are shrubs, thatch and pine forests, mixed trees, etc., forest coverage rate is 90%. The terrain is high at both ends of the north and south, and the middle is flat. The island is divided into north and south, and it is northeast to southwest. The mountains on the island are rolling, with 18 mountains over 100 meters, the highest main peak Wangchiling, located in the northeast of the island. There are many sea (port) bays around, mainly Erxie Bay, Guandi Bay, Venus Bay, Shijing Bay, Dawei Bay, and the east side bay are mostly sand banks, and the northwest two sides of the silt bottom are mostly silted mud beaches, with shallow water and dry out at low tide.