Take anti-inflammatory drugs lead to yellow urine, possible causes: First, some special anti-inflammatory drugs can cause yellow urine, commonly used such as sulfonamide antibiotics or furan antibiotics, such as furantoin or cotrimoxazole and other drugs, after oral intake, will lead to yellow urine. Second, drinking too little water during the medication, the existence of its own urine concentration, will lead to yellow urine color. It is recommended to drink more water appropriately during oral anti-inflammatory drugs, drinking about 1500mL daily. iii. If the summer heat, excessive loss of body fluids, more sweating, or combined with diarrhea, vomiting, etc., can also cause yellow staining of urine. This is except for the reason of drug staining, which causes local yellow staining due to concentrated urine. Fourth, the presence of abnormal bilirubin metabolism can also cause yellow staining of urine. In this case, even without oral antibiotics, yellow staining of the urine can occur, and a routine urine examination can be performed, and an increased bilirubin content in the urine can be seen.