Nutritional changes in the skin of the lower extremity are one of the symptoms of primary lower extremity deep venous valve closure insufficiency, which mostly occurs in people who are persistently engaged in physical labor or standing workers, and has a higher incidence in farmers, hairdressers, athletes, surgeons, and other people. Reduction of intraventricular pressure in valvular insufficiency includes elevation of the affected limb, appropriate activity, and application of elastic bandages. Primary nutrient deficiencies are defined as simple inadequate intake, either of individual nutrients or of several nutrients simultaneously. The common causes of nutrient intake deficiency are as follows. 1.Food shortage caused by war, disaster, poverty and other socio-economic factors. 2, poor dietary habits, such as partial eating, avoidance of food or picky eating, etc., so that the intake of certain foods is insufficient or lack of nutrients caused by deficiency. 3, unreasonable cooking and processing, resulting in the destruction and loss of nutrients in food, although the number of food intake, but some nutrients are not enough. Such as long-term consumption of refined white rice, rice, etc. susceptible to foot disease; vegetables first cut and then washed, excessive heating or boiling can make a large number of vitamin C destruction, loss.