Urine is cola-colored may be caused by factors such as urinary system injury, serosanguineous disease, and urinary system tumors. 1. Urinary system injury: the recent urinary system has suffered injury, resulting in local damage to the urinary tract tissues, usually cause old hematuria, will lead to the color of urine to cola color, may also be accompanied by mild pain. 2. Fava bean disease: When there is Fava bean disease, it may cause the color of urine to become darker, usually become tea or soy sauce color, similar to the color of cola, and may also be accompanied by pale, fatigue, dizziness and other symptoms. 3. Urinary system tumor: for example, bladder tumor, tumor surface tissue necrosis, and combined with infection, will make the urine with blood, purulent secretion, necrotic tissue and other substances, which will make the urine become cola-colored, and accompanied by difficulty in urination. If the urine is cola-colored, persists for a long time or is accompanied by other obvious abnormalities, the patient should consult a doctor in time for examination and treatment. It is recommended that patients under the guidance of professional doctors for standardized treatment.