Magnetic system for separating biological samples

This utility model provides a magnetic system for separating biological samples. The magnetic system comprises a magnetometric base, wherein the magnetometric base is internally provided with a magnetic member accommodating tank, the accommodating tank is a convex-shaped hollow cavity, the magnetic member is in a convex shape, the convex shape of the magnetic member is less than that of the accommodating tank and thus the magnetic member is exactly placed in the accommodating tank. According to the magnetic system provided by the utility model, the combination between the magnetic member of the magnetometric base and the magnetometric base does not need to be fixed with glue. When the magnetic member is damaged, the replacement work can be completed very conveniently.