The formal stage is a long-sleeved gown with a small high collar, opening in the back, assisted by the nurse to wear, this is called a surgical gown. The color is mostly light blue or light green. Internal contact with the doctor's body is regarded as a clean area, external contact with blood and body fluids and patients, as a polluted area. The surgical gown must be completely isolated from contamination and clean environment, so it is very tightly wrapped.

Some net friends say that v-neck short sleeves short type, the official name is called hand washing clothes. It is the work clothes used by the operating room staff in the clean environment of the operating room, whether doctors or nurses or anesthesiologists can wear. Once in the operating room, you must ask for this work suit to be replaced. The sleeves are designed to facilitate cleaning of the hand, forearm and upper third of the arm.

After washing hands, the surgical staff will be assisted by the nurse to put on the surgical clothes. Some hospitals use color to distinguish staff members. In Japan, for example, anesthesiologists often wear dark red hand scrubs. Korean hospitals are green.

The operating room also has a kind of clothing, called visiting clothes, for external personnel to enter the operating room to wear. Nurse's uniform Is a uniform of nurse's white dress. Nurse's uniform is a uniform of nurse's white dress. Nurse's uniform is a uniform of nurse's white dress. Another is that summer clothes will be changed to short-sleeved style.