Green urine is a possible cause: First, Pseudomonas aeruginosa infection occurs in the urinary system, which can result in green urine, accompanied by symptoms such as frequent urination, urinary urgency and painful urination. The diagnosis can be confirmed by taking the relevant urine for bacterial culture and culturing Pseudomonas aeruginosa, which requires active anti-infection treatment. Second, when taking a lot of antibiotics or a lot of vitamin B, yellow-green or greenish changes in urine can occur, which may be related to drug metabolism factors. It is recommended to stop the related drug intake and observe whether the green urine improves. Thirdly, if the urine contains more bilirubin, this can occur when the urine turns green after being placed, or if the urine stays in the bladder for more than two hours, the bilirubin of the urine can be changed to bilirubin, so the discharged urine is greenish. It is recommended that routine urine tests and liver function tests be performed to further clarify whether there are elevated serum bilirubin levels and elevated bilirubin levels in the urine.