Medical damage indemnification is one kind of doubtful and difficultly treated diseases are particularly special. special civil indemnification and those caused by Medical damage indemnification must observe strict responsibility rules and complemented with medical responsibility insurance. Difficultly treated diseases differ from common diseases, the relationdship between the medical process and the damage result is not necessary and hard to define. Therefore, during the medical process of difficultly treated diseases, strict responsibility rules must be observed and the damage scope must be smaller and the damage index lower than those of common diseases. Meanwhile, medical insurance should be accepted in order to alleviate the risk of the patient side.