Streptococcal infections are one of the most common pathogens of respiratory infections, like the high incidence of purulent tonsillitis, scarlet fever and lobar pneumonia are all streptococcal infections, and treatment is mainly aimed at antibiotics that are more sensitive to streptococci, such as penicillins, macrolides, first-generation cephalosporins and second-generation cephalosporins. Streptococcal infection is more troublesome because it may induce kidney to related complications, such as acute glomerulonephritis, nephrotic syndrome, etc. It needs to be completely cured and try to avoid recurrence, which can reduce the risk of complications of kidney disease.