There are several reasons for patients to have yellow-green urine as follows: First, patients take a lot of antibiotics or vitamins, such as gold vitamins, vitamin B, etc., which leads to a transient yellow-green urine, and the urine will return to normal after stopping taking the drugs. Secondly, consider that the patient is infected by Pseudomonas aeruginosa, and the change in urine is accompanied by bladder irritation signs, such as urinary urgency, frequency, painful urination, and in severe cases, fever and lumbago, which need to be examined through urinary routine in time. Thirdly, it suggests that the biliverdin indicator in the patient’s urine is high, because the urine is stored in the bladder for a long time, the bilirubin oxidizes to form biliverdin, so the urine is yellow-green, or the patient turns the urine from yellow to yellow-green after urinating and leaving the urine still for a period of time. In daily life, patients are advised to drink more water, urinate more often, and seek medical attention promptly when urination discomfort occurs.