The vast majority of people with pharyngitis without fever but coughing sputum will not develop nephritis, only a very small number of patients with pharyngitis without fever but coughing sputum without timely treatment may induce nephritis, including acute post-streptococcal infection nephritis and IgA nephropathy. Acute post-streptococcal infection nephritis mostly develops at the age of 5 to 14 years, with the peak age between 2 and 6 years old, and rarely involves middle-aged and elderly people. Most patients have a history of antecedent infection (pharyngeal or cutaneous), and macroscopic hematuria often occurs approximately 1-2 weeks after infection. Patients with IgA nephropathy also often have a combination of upper respiratory tract infections, and in most patients, hematuria may occur a few hours or 1-2 days after infection. The duration of hematuria varies from a few hours to a few days, with recurrent episodes of hematuria, the interval between episodes is prolonged with age, and some patients turn to persistent microscopic hematuria. After the pharyngitis, we need to take timely and effective treatment to avoid long-term recurrence of pharyngitis. Patients with recurrent episodes need routine urine examination to see if there is hematuria, proteinuria and so on. Pharyngitis patients are recommended to go to the regular hospital in time to avoid delaying the condition, do not use drugs privately.