Urine color is a little green, then the possible causes: 1, after taking a large number of antibiotics or vitamins, can appear light green or yellow-green urine, which is related to taking medication, it is recommended to stop the relevant drug intake, appropriate more water, observe whether the urine color back to normal. This situation does not have any urinary discomfort, it is recommended that regular observation can be done.2. Urine can appear greenish if there is an infection of Pseudomonas aeruginosa, and it can be accompanied by symptoms such as frequent urination, urgent urination, painful urination or pain in the lower back and abdomen. It is recommended that a urine culture test be performed. If the culture does confirm the presence of Pseudomonas aeruginosa, it suggests that the greenish urine is related to Pseudomonas aeruginosa infection.3. If the urine contains a large amount of bilirubin, the bilirubin will be oxidized and reduced to bilirubin after the urine is discharged or the urine is stored in the bladder for a period of time, and the phenomenon of greenish urine will occur. The level of bilirubin in urine is elevated in routine urine examination or accompanied by an elevated serum bilirubin level.