If a patient’s urine is green in color, consider the following causes: 1. Pseudomonas aeruginosa infection should be suspected, if the patient’s urine is green in color and there are symptoms such as painful urination and frequent urination, a urinary tract infection should be suspected, and it is caused by Pseudomonas aeruginosa infection, which is a very serious disease and needs to be treated promptly. 2. The actual color of the urine will be changed in the process of metabolism if the drug contains some green pigment. 3, in addition, if the patient’s liver function is damaged, biliverdin can not be well transformed, it may also be excreted through the urine, so that the urine color appears green. The above is an analysis of the specific reasons why patients’ urine color changes to green, and it is recommended that patients should go to a regular hospital for a clear diagnosis.