The invention supplies a method to prepare polypeptide of hairy antler, cut hairy antler into small blocks, wash them till without blood color by cold water scatter and grind them to be homogenate, add homogenate continuously, process them with supersonic, centrifugate and acquire the upper heat removing in where add into alcohol, agtate it, centrifugate and acquire the upper heat removing it rotates and evaporates, finally acquire the polypeptide of hairy antler. Also, disclosed is a medicine which uses the polypeptide of hairy antler generated by the way above as the active component and contains one or several carriers acceptable in medicine, such as compound polypeptide of hairy antler spraying agent. The polypeptide of hairy antler abstracted by the biochemical way keeps its original activity, can be changed into spraying agent by matching with GHRP, enter into the body and make effect firectly, which has changed the conventional way in which polypeptide of hairy antler is ignored and wasted, increased the utilization ratio of hairy antler and supplied technology and product for solving the problem that middle aged and elderly people has not enough GH sereted. |