Lichen planus is a common skin disease. Patients need to relax in daily life, develop healthy habits, reasonable diet, appropriate taboos, avoid spicy and stimulating food, beef and mutton seafood and other hairy products, pay more attention to exercise on weekdays to enhance physical fitness. For the treatment of windchurch rash, provide patients with the following dietary therapy: 1, cold bitter melon bitter melon 200g, wash and remove the flesh, shredded blanching, add sesame oil, MSG, salt a little, mix well. This dish has the function of clearing away heat and fire, and is suitable for patients with wind rash caused by blood heat and wind dryness. 2, cold meat skin jelly pork skin 200g, wash, scrape off the fat, add 500ml of water, stew for more than 1.5 hours on a light fire, incorporate diced carrots, diced green beans, diced dried bean curd and appropriate seasonings, leave to cool into jelly, cut into pieces for consumption. This dish has the effect of nourishing yin and yang, softening the skin, suitable for patients with wind rash caused by blood deficiency and wind dryness. 3.Red oil tofu 400g bean curd, 50g carrot, cut square dice, blanch in boiling water, boil with sesame oil 30ml, add saffron 3g, turn off the heat. Let it cool and remove the residue, pour over the tofu and add appropriate seasoning. This dish has the function of activating blood circulation and resolving blood stasis, harmonizing the middle and strengthening the spleen, and is suitable for patients with chronic disease and stagnant blood stasis with wind and hill rash.