Girl urine odor slight leakage may be caused by urethritis, cystitis, nephritis and other causes. 1. Urethritis: Urethritis refers to the inflammation of the mucosa of the urethra, which can be clinically divided into acute and chronic, non-specific urethritis and gonorrhea urethritis. Under the stimulation of inflammation, it is possible to make the urine secretion of smelly substances, so it is possible for the girl to appear urine odor slight leakage phenomenon. 2. cystitis: when the girl’s urinary system defense function is low, pathogens with the urethra upstream infection may occur cystitis, with cystitis when the bacteria can break down the urea to produce ammonia, so it is possible to make the girl appeared urine odor slight leakage of urine phenomenon. 3. nephritis: nephritis refers to the glomerular capillaries are damaged, its permeability increases, so the blood protein, red blood cells and these components will leak into the urine. If these ingredients are left for a long time, it will cause the growth of bacteria, so it is possible to make the girl appear urine odor slight leakage phenomenon. When the girl appears urine odor slight leakage phenomenon, it is recommended to go to the hospital in time for a detailed examination, identify the cause of the disease, under the guidance of the doctor for treatment.