Male hematuria may be urinary tract infection, urinary tract stones, tumors, prostatitis, nephritis and other diseases, but also fever, strenuous exercise. 1. Pathological hematuria: patients with urinary tract infections are often accompanied by frequent urination, urinary urgency, and urinary pain. Patients with urinary tract stones may be accompanied by renal colic. Patients with tumors may find lumps on the body surface. Patients with prostatitis may have difficulty urinating, waiting to urinate, etc. Patients with nephritis may have edema, proteinuria, high blood pressure, etc. 2. Physiological hematuria: It may be caused by strenuous exercise or fever, etc., and can return to normal after rest. There may be other reasons for men to have blood in urine, patients need to consult the doctor in time for examination and early treatment.