1.Steep 1~2 days with clean water, boil 30 minutes with slow fire, after completely cooling, steep them with clean water for 2~3 days (they can also be boiled for 30minubtes and them steep again), then they can be used. (Open the belly, remove the mouth and wash the mud in the process of steeping.)

2.Put the dry cucumber into the tap water, steep 3~4 days, exchange the water 1~2 per day. Put them into the icebox to keep fresh and prevent metamorphose, then they can be used. (Sea cucumber steeped in this method does not have big body, but the nutrition can be kept.)

3.Fill the thermos flask with full water, directly put the sea cucumber into it, steep 8 hours, then bring them out and put them into the icebox to keep fresh, steep 1~2 days with cold water, exchange the water 2~3 times per day. (Methods of Civilians.)

4.Dry sea cucumber should be stored under low temperature and dry place to prevent damp.