Academician Chen Keji is nearly 90 years old. He not only has a high influence in my country's academic field, but also likes to drink tea. He is still light and healthy and keeps writing. This book is compiled by Academician Chen based on literature and many years of his own health care practice, and organized by experts in clinical, literature, tea science, and nutrition. The main contents include tea culture and health care, research on tea theory in ancient herbal classics, Qing palace medical archives on tea drinking, poor nutrition and health, etc.