The alga is the most important basic producer in the ocean , its main function, in orderto be regarded as the artificial fish reef, make into the fodder garniture , make intomedical treatment and use the medicines , or utilize various kinds of algae glue thatmarine alga refined out, widely apply to ice cream , fruit juice , jam , can food processing, papermaking raw materials ,etc..The recent year have used the marine alga to extract the active material, characteristicof utilize its anti-oxidant activation , antibiotic , resists UV and strengthening theimmunitying etc. even more recently , make the cosmetics , not merely improve theeconomic worth of the marine alga , and make the special active efficiency of the marinealga get abundant application .