Urine color green may be related to urinary tract infection, taking drugs or drug poisoning, certain diseases. 1. Urinary tract infection, mainly Pseudomonas aeruginosa infection will show light green urine, usually accompanied by frequent urination, urinary urgency, painful urination symptoms, serious patients can be accompanied by lumbar pain, fever symptoms, need to perform urine culture tests to clarify the diagnosis. Green bacillus infection is more serious, if diagnosed, need to give active anti-infection treatment. 2. Taking a large amount of drugs such as vitamin D, aminopterin, salicylic acid or intravenous application of methylene blue and other drugs will appear green urine, after stopping the drug, the greenish urine symptoms can disappear. This is a normal drug metabolism reaction and not a disease. 3. Certain diseases such as typhoid fever, typhus, muscimol poisoning will also appear green urine. In short, green urine need to go to the regular medical institutions in time to clarify the cause of the disease and make the appropriate treatment.