1. 1-3 months. Sea cucumber can be kept for 1-3 months after soaking and freezing, but the nutrients of sea cucumber will be slowly lost after long time freezing, so it is recommended to finish it as soon as possible, which can reduce the loss of nutrients, and avoid the sea cucumber being damaged after long time preservation.

2. Sea cucumber belongs to invertebrate, echinoderm family, sea cucumber. There are more than 900 kinds of sea cucumbers in the world and about 140 kinds of sea cucumbers in China. Among them, the Indian Ocean and the Western Pacific Ocean sea area is the area with the most sea cucumber species and the largest amount of resources in the world. China's sea cucumbers are distributed in temperate zone and tropical zone, the temperate zone is mainly in the Yellow Bohai Sea area, the main economic species is the prickly ginseng, which is also the most well-known sea cucumber species in China, and the tropical zone is mainly in the coasts of Guangdong, Guangxi and Hainan, and the main economic species is the plum ginseng. Among them, Xisha Islands, Nansha Islands and Hainan Island are the main origins of tropical sea cucumbers in China. Sea cucumber in the various types of delicacies of the sea in the position of eight treasures, nearly half a century, scholars at home and abroad on more than 40 kinds of sea cucumber chemical composition research shows that the sea cucumber body is not only rich in amino acids, vitamins and chemical elements and other nutrients required by the human body more than 50 kinds of nutrients, but also contains a variety of biologically active substances, such as mucopolysaccharides, saponins, and collagen, and so on.