[Studies of the fifth section in the introduction of the Qian jin yao fang - Writings quoted from the Shen nong ben cao jing and the Yao dui].

The fifth section in the introduction of the Qian jin yao fang is composed of three paragraphs. The first paragraph is the same as that of the Shen nong ben cao jing. The second and the third ones begin with the sentences of "Lei gong say ..." and "Yao dui says ..." respectively. We inquired into the origin of these three paragraphs. As a result of our investigation, we inferred that the first and the second paragraphs were part of the writings of the Lei gong ji zhu shen nong ben cao and that the third one was part of the Lei gong yao dui. We also pointed out that the substance of these paragraphs was influenced directly and indirectly by Buddhist medicine.