This book is based on the principle of "taking medicine" ... it nourishes life, is nontoxic, and won't hurt anyone if it is taken for a long time ".Combined with the practical functions of improving intelligence, benefiting qi, prolonging life and inhibiting diseases, more than 100 kinds of commonly used medicinal materials are extracted from Benjing, plus 46 kinds of medicinal materials that are often used for health preservation in real life (in the top-grade medicinal materials list of Benjing) Part of it is contained in Shennong Materia Medica Classic), which constitutes a group of new "top-grade medicinal materials" which are very suitable for health care. Considerable space was devoted to explaining the medicinal characteristics and functions of medicinal materials, people's physical characteristics and principles of medication, the taboos of top-grade medicinal materials and how to apply them to health care. This book not only introduces more than 200 kinds of top-grade medicinal materials suitable for health care, but also lists hundreds of effective small remedies and dietotherapy remedies. Suitable for family health collection.