Surgery is a science that studies the occurrence, development, clinical manifestations, diagnosis, prevention and treatment of surgical diseases, and it is a professional department with surgical resection and repair as the main treatment means.

With the application of microsurgery technology, great progress has been made in surgery. The principles of specialty setting of surgery in hospitals are similar to those of internal medicine, and usually correspond to internal medicine. Surgical diseases are divided into five categories: trauma, infection, tumor, deformity and dysfunction.

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Surgery, as a subject of modern medicine, mainly studies how to remove pathogens from patients by surgical methods, so that patients can be treated. Surgery, like all clinical medicine, needs to understand the definition, etiology, manifestations, diagnosis, staging, treatment and prognosis of diseases, and pay more attention to surgical indications, preoperative evaluation and nursing, surgical skills and methods, postoperative nursing, surgical complications and prognosis.

As early as the mummies unearthed in ancient Egypt, the surgical traces of the head can be found. As early as more than 2,000 years ago, China had summed up some practical surgical experience from the practice of war, production and life.

Modern surgery started at the end of 19. At first, this was usually done by a trained barber, the so-called "barber". Therefore, in many Commonwealth countries today, surgeons are called "sir" instead of "doctor".

At the beginning of the 20th century, with the emergence and progress of disinfection, anesthesia, hemostasis and blood transfusion, modern surgery gradually deepened and improved. 65438-2009 Modern surgery was founded in the 1940s, which solved the problems of operation pain, wound infection, hemostasis and blood transfusion.

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