The majority of women with acute pyelonephritis are not serious and can recover completely after active treatment, while a small number of patients with other complications are relatively serious. Due to their physiological characteristics, women are prone to urinary tract infections such as acute pyelonephritis. This is an infectious disease, mainly caused by bacteria and other pathogens, and the vast majority of patients can be completely cured without sequelae after active antibiotic treatment, so it is generally not serious. However, a very small number of patients, especially those who are immunocompromised or old and frail, may lead to various serious complications, such as renal papillary necrosis, perinephric abscess, etc., and in severe cases, it can lead to acute renal failure, or even cause life-threatening infectious shock, which is relatively serious. Once acute pyelonephritis occurs, it is important to go to a regular hospital in time and follow the doctor’s instructions to standardize the treatment, so as not to delay the condition.