When urine is reddish-brown, it is divided into physiological aspects and pathological aspects, and there are different treatments for different causes. 1. Physiological aspects: Drinking a small amount of water before going to bed, waking up will find that the urine is reddish-brown, this is due to the concentration of urine, urine in the bladder storage time is too long lead to, in this case, drink more water will improve this situation. If you have consumed red dragon fruit the day before, it will also produce reddish-brown urine. It is recommended to drink more water, urinate more and avoid spicy and stimulating food. 2. Urinary tract infection: bacteria or other pathogenic microorganisms caused by urinary tract infection, there will be painful urination, increased urethral discharge and urinary urgency, etc., with the development of the disease leading to bleeding will cause the urine to become reddish-brown. This situation needs to take penicillin, cephradine and other antibiotics for treatment. 3. Urinary stones: urinary stones can lead to hematuria due to stone irritation of the mucosa, manifested as reddish-brown urine, which requires timely drug or surgical treatment to expel the stones. 4. Urological tumor: Urological tumor due to bleeding can lead to red blood cells in urine, manifested as reddish-brown urine, need to carry out chemotherapy, surgery, interventional therapy, etc. for urological tumors. Regardless of which disease causes hematuria should be actively treated, it is recommended that patients go to the hospital in time for examination and standardized treatment under the guidance of the doctor after the cause of the disease is clarified.