Abstract:Gastrodin is a phenol-glucoside, obtained from Gastrodia elata Blume (Fam.Orchidaceae) by Investigator Zhou Jun and other of The Institute of Botany of Kun-ming, Academia Sinica. The structural formula of gastrodin is p-hydroxymethy phenyl -β-D-glucopyranoside, its chemical formula is C13H18O7, forming a white pin cry-stals, with a melting point of 154-156℃. It is synthetized now.In a previous paper, the authors reported the sedative and anticonvuisant effects of synthetic gastrodin and its genin. The prescnt paper reports the subacute toxicity and the effects of gastrodin and its genin on the heart and small intestine as followg.