Algae extracting process

The invention discloses a method of synthetically distilling the matters from the seaweed, such as amylase, plant growth hormone, EPA, DHA, etc. The method is follows: crush the seaweed, add the acidto digest the crushed seaweed and add the ethanol to deposit and grade it, and then acidly hydrolyze it to get the amylase products whose molecular weight is different; after that, add the ethanol tothe seaweed leavings to digest it, reclaim the solvent to extract it, and then separate and refine the solvent, to get the ferny rhodophyll; use acetic ether to extract the seaweed leavings gotter after the seaweed is distilled, reclaim the solvent and chromatographic it to get the mono-ester ramification of EPA and DHA, then acidly hydrolyze the mono-ester, and extract the hydrolyzed mono-ester to get EPA and DHA.