The possible causes of red urine in the morning for women: first, the presence of urinary tract infection, the degree of infection is relatively mild, manifested as the urethral mucosa congestion, bruising and other states, when a small number of red blood cells mixed in the urine can be expressed as red urine color, more obvious in the concentrated state of urine, such as the morning urine in a concentrated state, so the color is more obvious, you need to carry out routine urine examination to rule out the presence of infection The second is that there may be a urinary tract infection. Secondly, there may be stones in the urinary tract. Stones stimulate the surrounding mucous membrane and cause local bleeding, which can be manifested as red urine and may be accompanied by pain in the area where the stones are located, so ultrasound examination of the urinary system is needed to further clarify the presence of stones in the urinary tract. Third, the presence of tumors, local necrosis of the tumor causing mucosal detachment and destruction of the surrounding mucosa, which can cause red urine. Generally, it is not accompanied by obvious pain. When the urine is concentrated, the phenomenon of red urine is more obvious, but after drinking more water during the day, the symptom of red urine is not obvious, so further routine urine examination and CT examination of the urinary system are needed to rule out the existence of tumor.