Urine with blood color need to take into account strenuous exercise, drug factors, urinary system diseases, systemic diseases, the urinary system around the neighboring organs lesions and other reasons. 1. strenuous exercise: long-term lack of exercise or less exercise, if suddenly sustained strenuous exercise, there may be hematuria. 2. Drug factors: urine with blood color also need to consider drug factors, such as heparin, cyclophosphamide and so on. 3. Urinary system diseases: lesions in the urinary system is one of the common causes of blood in the urine, such as glomerular disease, infectious diseases of the urinary system, stone lesions, tumor lesions, vascular lesions and so on. 4. Systemic diseases: systemic diseases that can cause blood in the urine, mainly including epidemic hemorrhagic fever, diabetic nephropathy, hemophilia, leukemia, thrombocytopenic purpura and so on. 5. Urinary system around the neighboring organs lesions: appendicitis, salpingitis, pelvic inflammatory disease and the urinary system and the neighboring organs lesions, may also bring the urine with blood. The factors that can cause blood-colored urine are very complex and varied, such as the abnormal symptoms, it is recommended to seek medical attention in a timely manner.