Sun Simiao is not only good at internal medicine, but also good at gynecology, pediatrics, surgery, and otolaryngology. In traditional Chinese medicine, he advocated for the first time that the treatment of women's and children's diseases should be set up as a separate department, and in his work, he first discussed gynecology and pediatric medicine, declaring that it was "the meaning of Chongben". He attaches great importance to maternal and child health care, and is the author of three volumes of "Women's Prescription" and two volumes of "Prescription for Young Babies and Children", which are placed at the top of "The Prescription of a Thousand Gold". Under his influence, future generations of medical workers generally attach importance to the study of treatment techniques for gynecological and pediatric diseases.

Sun Simiao attaches great importance to disease prevention, stresses the view of prevention first, adheres to the method of syndrome differentiation and treatment, and believes that if people are good at life, they should be free from disease. As long as "a good doctor guides him with medicine and saves him with injections", "there are curable diseases in the body, and there are disasters that can be eliminated in heaven and earth". He also proposed that "survival does not forget death, safety does not forget danger", emphasizing that "it is better to regulate qi, tonify laxatives, massage and guide every day, and do not take health as a matter of course." He advocated paying attention to personal hygiene, attaching importance to sports and health care, and put forward the idea of disease prevention and treatment combining dietary therapy, drug therapy, health preservation, nourishment, and health care.

Sun Simiao attaches great importance to the study of common and frequently occurring diseases. For example, people in mountainous areas are susceptible to goiter disease (commonly known as thick neck) due to the lack of iodine in their food, and he believes that this disease is caused by the unclean water quality in the mountains, so he uses the thyroid gland of seaweed and other marine plants and animals to treat it, which has a good effect. He made a detailed study of beriberi, and first proposed that cooking porridge with grain white bark can be prevented, and the selected drugs for the treatment of beriberi are rich in vitamin B1 and have a good effect. In long-term practice, Sun Simiao also summed up specific prescriptions for the treatment of dysentery, tapeworm, night blindness and other diseases. While living in the Taibai Mountains, Sun Simiao personally collected medicinal materials and studied the properties of medicines. He believes that it is extremely important to collect medicines in a timely manner, and that the early stage is not successful, and the late time for the proper collection of Chinese medicinal materials is determined based on rich pharmaceutical experience.

Sun Simiao also studied acupuncture and moxibustion, and wrote "Mingtang Acupuncture and Moxibustion", which uses acupuncture as an adjunct therapy to medicine. He believes that "the way of good medicine is to first diagnose the pulse and prescribe it, followed by acupuncture, and help each other internally and externally, so that the disease must be cured." "Actively advocate comprehensive treatment of the disease.

In the process of studying medicine, Sun Simiao mixed sulfur, saltpeter, and charcoal into powder, which was used to make alchemy, which is the earliest formula for gunpowder in existing Chinese literature. In his article "The Pill Sutra Inner Sulfur Method", he described the production method of the volcanic sulfur method.

Sun Simiao also summarized the diagnosis and treatment methods of good doctors: "The courage is big but the heart is small, the wisdom is round and the action is the prescription." "Bold" is to have a confident and temperamental temperament like a martial artist; "Small heart" means to be as cautious as walking on thin ice and settling on the edge of a cliff; "Zhiyuan" refers to the ability to change the machine in the event of an accident, not to be rigid, and to have the ability to control the enemy's aircraft first; "Xingfang" refers to not greedy for fame, not for profit, and has its own open world in his heart. ”

In clinical practice, Sun Simiao summed up many valuable experiences, such as the "Ah Shi acupoint" and "pain as the pain" acupoint extraction method, the treatment of night blindness with animal liver, the treatment of endemic goiter with sheep thyroid gland, and the prevention and treatment of beriberi with milk, beans, and corn husk; For pregnant women, it is proposed that the residence should be clean and quiet, the mood should be comfortable, and the labor should not be nervous; For infants, it is proposed that breastfeeding should be regular and quantitative, that there should be more windy days at ordinary times, and that clothes should not be worn too much, etc. These propositions are still relevant today.

Sun Simiao has a profound study of classical medicine, attaches great importance to folk prescriptions, devotes himself to medical clinical research all his life, and is very proficient in internal and external, gynecology, pediatrics, five senses, acupuncture and moxibustion, and has 24 achievements that have created a precedent in the history of Chinese medicine, especially the discussion of medical ethics, advocating gynecology, pediatrics, acupuncture and moxibustion acupuncture points, etc.

Sun Simiao believes that "human life is the most important, there is a precious daughter, one party is beneficial, and virtue is more than this", so his two works are titled "Qianjin" Eryu, named "Qianjin Yaofang" and "Qianjin Yifang". He drew on the doctrine of the viscera in the "Yellow Emperor's Neijing", and for the first time completely proposed the classification and treatment of miscellaneous diseases centered on the cold, heat, deficiency and reality of the viscera in the "Qianjin Yao Fang"; After collating and studying Zhang Zhongjing's "Treatise on Typhoid Fever", he classified typhoid fever into 12 treatises and 15 taboos on typhoid fever, which provided a gateway for later generations to follow for the study of "Treatise on Typhoid Fever and Miscellaneous Diseases", especially adding more specific content to the generalized typhoid fever. He founded the method of studying the "Treatise on Typhoid Fever and Miscellaneous Diseases" from the three aspects of prescription, syndrome and treatment, which set a precedent for later generations to use prescriptions and similar evidence.

The 30 volumes of "Qianjin Yao Fang", the whole book is a combination of prescriptions and 5,300 treatises, with a wide range of prescriptions and rich content, including medical theories such as diagnosis and syndrome, as well as clinical departments such as internal and external, gynecology and pediatrics; It is divided into 232 courses, which is close to the classification method of modern clinical medicine. It involves not only detoxification, first aid, health preservation, dietary therapy, but also acupuncture, massage, guidance, and vomiting, which can be said to be a good summary of the development of traditional Chinese medicine before the Tang Dynasty. The Prescription of a Thousand Golden Dollars is a representative masterpiece in the development of medicine in the Tang Dynasty of China, which has a significant influence and contribution to the development of medicine in later generations, especially prescriptions. It also has a positive effect on the development of medicine in Japan and Korea. "Qianjin Yao Fang" is the earliest medical encyclopedia in China, from basic theory to clinical departments, including theory, law, prescription and medicine. One is the classic materials, and the other is the folk unilateral prescription, and to this day, many contents still play a guiding role. "The Prescription of a Thousand Golds" is a great contribution to the development of pharmaceutics. The book collects the clinical experience from the time of Zhang Zhongjing to Sun Simiao, and the achievements of prescriptions over hundreds of years, especially the different sources of prescription medicine, showing Sun Simiao's profound medical origin and exquisite medical skills. Later generations called "Qianjin Fang" the ancestor of square books.

The thirty volumes of "Qianjin Yifang" are the works of Sun Simiao in his later years, which is a comprehensive supplement to "Qianjin Yaofang". The book is divided into 189 categories, with more than 2,900 poems, including formulas, treatises, and methods, covering various aspects such as materia medica, women, typhoid fever, children, nourishment, tonic, stroke, miscellaneous diseases, carbuncles, color veins, and acupuncture, especially for the treatment of typhoid fever, stroke, miscellaneous diseases and carbuncles. Of the more than 800 drugs included in the book, more than 200 provide detailed information about the collection and preparation of drugs. In particular, it is worth mentioning that the book includes the articles of the "Treatise on Typhoid Fever" that have been scattered to the people in the Jin and Tang dynasties, and constitutes nine or ten volumes separately, becoming the only research work of "Treatise on Typhoid Fever" in the Tang Dynasty, which has played a positive role in promoting the preservation and circulation of the articles of "Treatise on Typhoid Fever".

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