The invention refers to a preparation method of
ginseng polysaccharide. The method includes the following step: extract it from the
ginseng or the marc of the
ginseng decocted, filtrate, concentrate and deposit the extracting solution, get the precipitate after centrifugence and dry it with low temperature to get the crude product of ginseng
polysaccharide. We get the
polysaccharide product after the ginseng polysaccharide goes through the boiling, depositing,
filtration, trash extraction,
frost thawing, getting rid of the
protein and getting the supernatant and the supernatant passes through the concentration with low pressure and
drying with low temperature. We can make it into all kinds of forms of prepared drugs after the ginseng polysaccharide passes through the experiments in
pharmaceutics. The invention effectively increases the quality of the ginseng polysaccharide injection, fully exerts the immunoloregulation function of the ginseng polysaccharide, increases the anti tumor effect of
chemotherapy medicament and is used to reduce the
side effect caused by the knubbly radiotherapy and
chemotherapy as well as
adjuvant for curing the tumor.