You can use a small mirror and place it underneath your vulva and move it back and forth to observe your vulva with the help of the mirror. In addition, by observing the color, clarity and consistency of vaginal secretions, such as leucorrhea and menstrual blood, you can also find some clues. Normal leucorrhea is a thin, clear white liquid, and normal menstrual blood is bright red or light red, with some people having a few blood clots. Second, “smell” is to use the nose to smell the secretions, menstrual blood or odor emitted from the vulva. The normal smell is generally light fishy, sweaty or odorless. If there is a fishy smell, putrid smell or special smell, there may be a problem. Three, “touch” first wash your hands clean, with the index and middle fingers of the two fingers “finger belly” (commonly known as “finger belly”), from the “mons pubis Start from the “mons pubis” area, and press the vulva from top to bottom, in order to touch the anus. When you touch the vulva normally, it should feel smooth and soft. If you don’t press hard enough, you won’t feel any pain, and of course, you shouldn’t feel small nodules or lumps under normal circumstances. On the contrary, there may be disease.