The invention relates to a preparation method for obtaining blood used for preparing homologous antiserums and a 
spleen byproduct used for preparing transfer factors from the bodies of 
fur bearing animals such as foxes, 
raccoon dogs and minks; the furs of the foxes, the 
raccoon dogs and the minks are taken concentratedly in December and confirmed according to the fur-taking dates of different areas; 
healthy individuals are picked up 45 days before a predicated fur-taking date; the booster immunization of univalent vaccines or polyvalent vaccines of 
canine distemper, 
Canine parvovirus enteritis, adenovirus 
disease, 
corona virus laxness, parainfluenza, and 
pasteurellosis is carried out for 3 times by purified and condensed antigens on the foundation of carrying out immunization for once in summer; when the furs are taken, aseptic anticoagulation 
blood collection is carried out to a heart to improve the 
blood serum yield; and the spleens of the animals are collected for extracting specific or common transfer factors simultaneously. The blood can be conveniently prepared into the blood serums which 
resist communicable diseases, and the transfer factors can be extracted the 
spleen, thus providing guarantee for the healthy development of the breeding in the next year; the invention is used for curing the corresponding communicable diseases of the wild animals of the same species; and when a small amount of 
communicable disease cases appear in a breeding crowd, the corresponding pathogeny hyper-
immune serums and transfer factors are mainly injected to a supposed healthy crowd after the pathogeny is confirmed so as to cure the affected animals in the early period of 
disease and control the spreading of the epidemic situations.