Abstract:To make clear the preservative effect of room temperature exposure， microporous membrane sealing and vacuum preservation on fresh Gastrodia elata， indexes including the appearance change， the loss of water， and the content of active components of Gastrodia were detected by sensory observation， weighing calculation， and high performance liquid chromatography. The results showed that Gastrodia elata with room temperature ex－ posure loss water seriouly， and with bad appearance， but the active ingredient decreased more slowly； the Gas－ trodia elata with microporous membrane sealed can better maintain the appearance and its own characteristics； the Gastrodia elata with vacuum preservation prone to rot and can't eat. In 20 days， the above three methods preserved Gastrodia elata's active ingredient content higher than the requirements of Pharmacopoeia content. Gastrodin and hydroxyl benzene methanol content in Fresh Gastrodia elata are higher， with high edible and medicinal value； open or microporous membrane enclosed can better ensure the content under the low tempera－ ture environment.