Anti-O, also known as anti-streptococcal hemolysin, is an antibody produced by the body after infection with Streptococcus haemolyticus. Anti-high O has two conditions: 1, the body is being infected with Streptococcus haemolyticus: If the body is being infected with Streptococcus haemolyticus, it can cause a variety of diseases, and the clinical manifestations are not the same. First of all, infection with Streptococcus haemolyticus can cause acute purulent tonsillitis in the human body, and the patient then has a series of symptoms such as fever, sore throat and painful swallowing. The patient will have fever, sore throat, painful swallowing and other symptoms, and the tonsils will be swollen with pus on the surface. 2. If the infection of Streptococcus haemolyticus causes acute glomerulonephritis, the patient will also have a series of symptoms such as high blood pressure, low urine, facial swelling, etc.