First, if you take a lot of antibiotics orally, you can have a transient green urine, which is related to the medication, and after you stop taking the medication, it can be improved or returned to normal, not a disease condition. Secondly, a long course or high dose of vitamin B can lead to a greenish or yellowish-green color change in urine, which is also related to the intake of vitamin B. After stopping the relevant medication, it can be restored to normal. Third, if there is Pseudomonas aeruginosa infection, the urine may appear cloudy with greenish color, usually accompanied by urinary frequency, urinary urgency, painful urination symptoms, need further urine culture, urinary routine examination to confirm the diagnosis. Fourth, if there is a high level of serum bilirubin in the body, there may be greenish urine, because bilirubin exists in the urine, and after the redox reaction, bilirubin is formed, which can lead to a clear green urine, and further determination of serum bilirubin and urinary bilirubin is needed.