Deer spleen extract preparation and preparation method thereof

The invention provides a deer spleen extract preparation and a preparation method thereof. The preparation method comprises the following steps of: adding water or normal saline or buffer solution into deer spleen, mashing with a colloid mill, performing enzymolysis, centrifuging, taking supernate, concentrating, and performing spray drying to obtain dry powder, wherein the dry powder can be mixed with other one or more Chinese medicaments to prepare a compound preparation, and the dry powder is prepared by the same method; and adding accessories acceptable in health-care food into the dry powder, and thus obtaining the oral preparation facilitating oral administration. The preparation has health-care functions of assisting in improving human immunity and the like; and the waste deer spleen is changed into valuable, so that the utilization rate of the deer spleen is improved.