Forests and ocean ecology become in danger due to the damage made by human. Forests are known as the lung of earth, and ocean source  has been decreasing at the rate of 3.5% every year since 19^th century. So protecting forest source and ocean ecology has become human’s most urgent task. Under such background, to protect natural ecology and meet market’s needs, aquarium industry set off on the path of application of environmentally friendly material to produce products, such as artificial coral, sink wood, landscape setting rock. These products are close to nature, hard to distinguish them from the real ones but much easier and more convenient to keep, which are wildly used in aquarium landscape setting.