In early days, there used to be a dense coastal forest grown in the costal area between E-Luan-Bi and KenTing. However, due to reclamation and sisal cultivation, the forest was almost depleted. Until 1982 when this area was planned as an eco-protection area, the landscape has been gradually restored. HsianGioWan Eco-Protection Area is divided into the northern and southern section by No.26 highway. The landscapes in northern and southern section are totally different.High coral reefs risen in Pleistocene consists of the slump scarp landform in the northern section. The whole area is rough and collapsed large coral reefs are everywhere. When northeast monsoon is strong in winter, there will be small-scale barchan dune formed. The southern section is located in Holocene sea terrace. Under the present alluvium, there is Holocene coral reef. Fringing reefs and sea trench cover the costal area. Coarse shell sands, reef bones and reef gravels are often seen inside the sea trench gaps. Since HsianGioWan Eco-Protection Area is located in low-lying lands, there are coral rocks with many holes and dune in high permeability collected in this area. Therefore, spring water resource is abundant. In addition, the steep landform is disadvantageous to exploitation. HsianGioWan Eco-Protection Area is the only coastal forest that is much more completely protected in Taiwan. Although the forest area is not large, plants are in a great many varieties, including coastal coral reef plant area, sand herbs area, coastal shrubs area and coastal forest plant area.Due to strong sunshine, strong wind and sea salt spray throughout the year, all plants in the coastal coral reef plant area are crept. Only few plants in the lee side can grow and become 1 meter high shrubs.Since the sand herbs area is located behind the coastal coral reef plant area, the landform is narrow and typical sand-coast liana including beach morning-glory, bay bean and filiform cassytha grow in this area.Plants in coas