When it comes to doctors most people think of should be - white angel!

But why are they wearing green scrubs in the operating room?

When you look at a color for a long time, when you shift your eyes to look elsewhere, you will see a complementary color to the one you just saw.

Blue and green are the complementary colors of human internal organs as well as blood color, so nowadays surgical gowns and operating rooms are blue and green, which not only cancel the visual image, but also relax the mood.

During the Middle Ages, a virulent infection ravaged Europe. Isolation and running away could not effectively stop the outbreak.

To prevent infection during contact with patients, in 1619, a French doctor named Charles de Lorme invented a set of steampunk-style protective clothing, which is the famous beak doctor.

Since the French microbiologist Pasteur invented the "Pasteur method of sterilization," doctors have also used it to recognize that lack of sterilization is a major cause of post-operative infection.

In 1865, Joseph Lister, an English physician, took Pasteur's results into account. In 1865, Joseph Lister, a British physician, referred to Pasteur's results and suggested that lack of surgical sterilization was the main cause of postoperative infections. When he operated on a patient with a broken leg, he made a series of improvements, choosing to sterilize with carbolic acid and wearing a white coat, which greatly improved the success rate of the operation.

In 1868, the Glasgow Hospital under the auspices of Lister underwent a reform in which doctors changed from bowler hats and gowns to white cloth melon caps and white coats.

From then on, the medical staff was called "white soldiers". The French medical profession once scoffed at this change, and it was not until the 1880s that French doctors actually changed to white coats. Disinfection and prevention methods then became prevalent in the medical profession.