This article pointed out that the purpose of learning the ancient medical case, is not to reciting a herb or a formula, but to deeply understand their thinking process to solve problems. You learn more medical case, you gain more wisdom. To deeply analysis the reasons of the insufficiency or missing pieces of ancient Chinese academic information or medical records, we know that a compliment can be made by applying modern language, modern expression and interpretation of these data for information as much as possible which may fully restore to its original appearances. It is able to allow readers to be immersive, as reflected in its people, but also really to make the writer's academic soul resurrection. The truth known in practice is used to be the golden rule to explore the truth in ancient medical record documentary. Usually even ancients had hidden their knowledge in their writings which could be recoverd through the methods in this study.