Bleeding and stinging urethra in women is commonly associated with cystitis. Causes of cystitis are the following: 1, drink less water; 2, love to eat spicy and stimulating food; 3, love to hold urine; 4, strain or low immunity; 5, frequent sexual life, often accompanied by gynecological diseases. Treatment: 1, routine urine, urine culture examination, according to the results of the choice of antibiotics, often applied quinolones or cephalosporin antibiotics, the application of 1 week to review the routine urine and urine culture. 2, life, diet should pay attention to rest, drink more water, do not hold urine, avoid spicy and stimulating diet. 3, do not have sex in the near future, such as accompanied by gynecological diseases, to be treated together.