Sea cucumber, belonging to Holothuroidea, is a marine echinoderm that lives at the seaside up to 8,m. It has a history of more than 6 million years, and it feeds on algae and plankton on the seabed. Sea cucumbers are covered with stings, which are widely distributed in the oceans of the world. There are many kinds of sea cucumbers along the coast of South China Sea, about 2 kinds of which are edible. Sea cucumbers are as famous as ginseng, bird's nest and shark's fin, and are one of the eight treasures in the world. Sea cucumber is not only a precious food, but also a valuable medicinal material. According to "Compendium of Materia Medica", it is recorded that sea cucumber is sweet and salty, tonifying kidney, benefiting essence, taking urine, strengthening yang and treating impotence, and its nature is warm and nourishing, so it is named sea cucumber. Sea cucumber has the functions of improving memory, delaying gonadal aging, preventing arteriosclerosis and anti-tumor. With the popularization of knowledge about the value of sea cucumbers, sea cucumbers gradually enter the people's table. Living environment determines the quality of sea cucumber.

Seacucumber, commonly known in China, includes all the animals called "sea sweet potatoes" or dry sea cucumber. Narrowly refers to the genus holothuria. The genus Holothuria is the largest genus of Holothuria, including more than 12 species. Echinodermata 1,1 species of invertebrates of Holothuroidea or Holothuroidea. Species of edible sea cucumbers such as Holothuria, Stichopus and Thelonota. It is found everywhere in the ocean, mostly in shallow water, but sometimes in deep water. Mainly produced in Indian Ocean and western Pacific Ocean. 8 ~ 1 species of holothurian are mostly in coral reefs. Because the protein content of sea cucumber is extremely high, and collagen is also very rich, which can be compared with colla corii asini and colla cornus Cervi, it can not only enrich blood, but also delay the aging of the body, make the skin smooth, and eliminate wrinkles and facial spots. Moreover, the fat content in sea cucumber is low and will not cause weight gain. Keratin in sea cucumber can enhance the hematopoietic function of red bone marrow cells, and is rich in natural active calcium, which can be easily absorbed by human body. After eating, it can generate blood and nourish blood, promote calcium absorption and supplement calcium needed by human body.