To provide a livestock disease management system, livestock disease management server, a livestock disease management method, and a livestock disease management program capable of efficiently discovering livestock disease even in a large scale rearing by a small group of persons as well as estimating various disease risk at high accuracy.SOLUTION: A disease management server 111 in a livestock disease management system 1 includes: a livestock status acquirement unit 112 for acquiring livestock status information including image information imaging the livestock; and a disease risk estimation unit 115 for estimating disease risk according to the status of the livestock by analyzing the status of the livestock by extracting the livestock shown in the image information acquired by the livestock status acquirement unit 112.SELECTED DRAWING: Figure 1