The worsening of occult blood in gastroenteritis in patients with nephritis should be considered in terms of simple hematuria, bacterial infection, blood pressure and kidney disease. Patients are advised to pay attention to improving lifestyle, using antibiotics, such as amoxicillin capsules, ceftriaxone, etc., and controlling blood pressure to improve occult blood symptoms. 1. Simple hematuria: If the patient has simple hematuria, negative proteinuria and normal blood pressure, it is recommended that the patient’s diet should be light, low-salt and low-fat, and avoid spicy and greasy food to stimulate the gastrointestinal mucosa. 2. Bacterial infection: If the patient is due to bacterial infection resulting in occult blood, diarrhea and other symptoms, the patient can be recommended by the doctor to use sensitive antibiotics that have no toxic side effects on the kidneys, such as amoxicillin capsules, ceftriaxone, cefotaxime and other anti-infective drugs. 3. Blood pressure and renal disease: If the patient has nephritis occult blood aggravation, and blood pressure is elevated, we have to consider hypertension nephropathy, it is recommended to first actively control blood pressure, blood pressure control to normal normal state, hematuria will gradually disappear. Nephritis gastroenteritis occult blood aggravation of patients, should consult a doctor in time, under the guidance of the doctor to use the correct medication.