There are 8 volumes of Elbow Backup Emergency Prescription, the contents of which are mainly simple and convenient treatments for some common diseases, including oral prescriptions, external use, massage, moxibustion, bonesetting and other very practical contents. Although the title of this book is "Elbow Queen", it contains quite a lot of precious medical historical materials and practical prescriptions and methods. There are many important inventions and discoveries in the history of medicine, which have important enlightenment for future medical practice.