Chinese Herbal Safety introduced definition, principle, precaution of Chinese herbs, reaction, adverse side effect, and toxicity indication. This book introduced herbal combination functions related to safety, and common herbs and formulas related to safety usage. Also, this book introduced precaution when using Chinese herbs and formulas with special condition, such as diseases stage, female during the normal menstruation, pregnancy, nursing mother, teenager, diet, body constitution types, and life styles. The purpose of this book is to help practitioners build up high standards, principles, and precaution when using Chinese herbs and formulas in the health care practice.