Girls standing to go to the toilet may lead to vaginitis, pelvic inflammatory disease, skin irritation and other hazards. 1. Vaginitis: due to the complex structure of the female physiological system, the urethral opening is located above the vaginal opening, the two are close to each other, if you stand to go to the toilet, due to the role of gravity, the urine will flow into the vagina, which may lead to inflammation and infection of the vagina. 2. Pelvic inflammatory disease: Due to the complex structure of the female urinary system, if you stand for a long time to go to the toilet, the urethra will form a barb shape under the effect of gravity. After urination, some urine will accumulate in the urethra and cannot be completely discharged. In the long run, women may suffer from pelvic inflammatory disease. 3. Skin irritation: If you go to the toilet standing up, urine will easily flow to the inner thighs and splash everywhere, and it will produce some odor on the thighs. The bacteria and viruses in the urine will also remain on the skin, causing skin irritation. Women should avoid standing to go to the toilet to avoid affecting their health. Meanwhile, it is recommended to pay attention to pubic hygiene and change underwear frequently in daily life. If you feel unwell, consult a doctor.