Raoping County, located at the edge of Chaoshan Plain, is one of the mountainous counties in Guangdong. Its terrain is surrounded by mountains and seas, and the terrain is high in the north and low in the south. The east, north and west are surrounded by mountains, with valleys, basins and plains in the middle and the South China Sea in the south. The northwest is hilly, with empty valleys and basins in the middle, and platforms and alluvial plains along the southeast coast. There are 47 large and small islands in the sea area, and the largest island covers an area of 46.9 square kilometers. After the founding of New China, haishan island was connected with the mainland through large-scale artificial reclamation. There are 7 peaks above the altitude of 1000m, and the highest peak is Xiyan Mountain, with the altitude of1256 m. The Huanggang River originates from the northern end and flows out of the South China Sea along the north-south direction of the center, forming the hilly area of Huanggang River Plain.

Raoping county is narrow from east to west and long from north to south, showing a horseshoe shape. It can be roughly divided into three parts: the north of Xitou (that is, the upper reaches of Huanggang River) is called the area around the north, which is dominated by low mountains and hills. Shangjianji in Xiyan Mountain is the highest point in Raoping County, with an altitude of1256m. The alluvial plain in the middle is alluvial by Huanggang River, which is generally 2-5 meters higher than the river surface. The area from the south of Xitou to Chiling (that is, the middle reaches of Huanggang River) is called the area around the middle, which is characterized by the large area of high hills and low hills and the well-developed intermountain basins. The south of Chiling is called Raonan, also called Huanggang River Delta, which is dominated by low hills and rivers and marine plains, with many coastal islands and many coastal harbors.