Vertical ridge on the nail may be a normal physiological phenomenon, may also be related to pathological factors such as disease problems. 1. physiological vertical ridge: for 2~4 years old children finger vertical ridge, due to the rapid growth of nails, root nail is wider than the tip of the nail caused by the children’s normal physiological nail vertical lines, with the growth of age, more in the age of 20 years old, gradually disappear. 40 years old and older men are prone to re-emerge in the physiological nail vertical lines, belong to the nails of the normal phenomenon of aging. 2. Pathological vertical ridge: for patients suffering from lichen planus, nail longitudinal groove, nail groove inflammation and other diseases, it is easy to appear nail with vertical ridge. In addition, autoimmune diseases, overwork, malnutrition, liver and kidney function weakness and other factors may also cause the situation of vertical nails, it is recommended that the patient to consult a doctor in time for examination, to clarify the cause of the disease for targeted treatment.