The white blood cells in the urine routine represent urinary tract infections, and the severity of urinary tract infections is determined by the number of white blood cells plus in the urine routine. If the white blood cell count in the urine routine is less than or equal to one plus sign, it proves that the urinary tract infection is mild and can be treated with relatively simple antibiotics. If the white blood cell count in the urine routine is equal to two plus signs, it is a moderate urinary tract infection and can be treated with second-generation cephalosporin antibiotics. If the white blood cell count in the urine routine is greater than or equal to three plus signs, it proves that the urinary tract infection is severe, you need to use the third generation of quinolones and cephalosporins antibiotics for anti-infection treatment, drink more water and rest during the treatment period.