The color of morning urine deepens, then the possible causes: 1, urine concentration caused by the general morning urine urine in the bladder, storage time is often greater than 4 hours or more, and after going to sleep patients generally do not drink, so the urine will occur to varying degrees of concentration. This is when you get up in the morning to urinate, there will be a yellowish dark color, not accompanied by any abnormal sense of urination, appropriate more water can return to normal this situation does not require any treatment. 2, if suffering from urinary tract infection, can cause the morning urine color is dark, and even can appear in the morning urine cloudy or with flocculent sediment, can be accompanied by frequent urination, urinary urgency, painful urination and other discomfort. If you have paroxysmal sleep hemoglobinuria, you may have darker urine in the morning, which may appear as a strong tea color or a soy sauce color. This is a disease of the hematopoietic stem cell system, which requires specialist consultation and treatment in the hematology department.