Red discharge from urination may be a physiological phenomenon, or it may be caused by certain diseases, such as ureteral stones, bladder cancer, urinary tract infections, etc., and you should consult a doctor in time to find out the cause. 1. Physiological factors: During menstruation, women can discharge vaginal secretions along with urine due to menstrual blood discharge, and red secretions appear, which is a normal physiological phenomenon. In addition, if the patient consumes dragon fruit or takes drugs such as rifampicin, there may also be red liquid discharge during urination. Usually there are no other uncomfortable symptoms, and no special treatment is needed. 2. Pathologic factors: (1) Ureteral stones: most of them are caused by kidney stones discharged into the ureter and stay in the ureteropelvic junction and other locations, which may show symptoms of hematuria, usually accompanied by lumbar abdominal cramps, and some patients may also show nausea, vomiting and urinary urgency. (2) Bladder cancer: Due to the rupture and bleeding of epithelial capillaries of bladder tumor, it can lead to discharge of red secretion in urination, and its typical symptom in early stage is intermittent painless hematuria throughout the whole process, and if combined with infections, the patients can also suffer from pain in urination, frequency of urination and other symptoms. (3) urinary tract infection: infectious diseases caused by abnormal reproduction of pathogens in the urinary tract, the patient’s urine is often cloudy, part of the hematuria can occur, but also manifested as pain in the lower abdomen, fever, chills, pain in urination and other discomforts. In addition, tumors in other parts of the urinary system, vaginitis and other diseases can also appear in the urinary discharge of red discharge symptoms, it is recommended to consult a doctor in a timely manner to clarify the cause of the disease, the doctor to give targeted treatment.