Squamous cell metaplasia refers to localized squamous epithelial metaplasia and localized squamous epithelial hyperplasia, indicating a low-grade squamous intraepithelial lesion level with the possibility of precancerous lesions. It is a cytological examination, so it does not represent the whole histological lesion of the cervix. Prevention is mainly directed at possible predisposing causes. Removal of causative factors and triggers is the key to prevent this disease. Pay attention to avoid excessive sun exposure and ultraviolet and x-ray exposure, and frequent exposure to chemicals such as arsenic and asphalt. Pay attention to dietary habits, eat more fruits and vegetables, eat less spicy and stimulating food and barbecue, maintain good living habits, and strengthen exercise to improve immunity has a good preventive effect on the occurrence of the disease. Enough nutritious food should be added. Eat appropriate food to nourish blood and Qi. Avoid eating fatty, sweet and alcoholic, spicy and fragrant, fried and baked foods that produce dampness, phlegm, dryness and heat, which can easily cause bleeding. Avoid eating raw and cold, melon and fruit, cold food and hard and indigestible food; avoid eating nourishing and greasy products. The following foods are recommended to eat less or not: 1, lamb kebabs Barbecued food has carcinogenic substances, and is not conducive to digestion. Barbecue food must be avoided as far as possible. 2.Cold drinks Cold food can easily damage the spleen and stomach and affect the absorption of nutrients. You can eat room temperature fruit. 3, fatty meat contains moisture and heat is not conducive to disease treatment. Avoid fatty, sweet and thick foods as much as possible.