In general, watermelon juice drink too much will not appear blood in the urine. If there is blood in the urine, you should seek medical attention as soon as possible to confirm the diagnosis of the lesion before treatment.
Watermelon is one of the commonly eaten fruits in summer, although watermelon contains certain plant pigments, however, it will be absorbed and metabolized after entering the human body, and generally will not cause the human body to have red urine for a short period of time, as in the case of red dragon fruit.
If the patient appears red urine or blood in the urine, especially accompanied by frequent urination, urinary urgency, urinary pain and other symptoms, we should consider whether the patient has infectious lesions in the urinary tract, hemorrhagic lesions, oncological lesions and other conditions.
In summary, drinking watermelon juice generally does not cause blood in the urine. If there is blood in the urine, you should consult a doctor in time.