Decreased lower esophageal sphincter tone is one of the symptoms of scleroderma esophagus, which refers to scleroderma, also known as progressive systemic sclerosis, which involves the esophageal muscle layer and develops its kinetic abnormalities. How to prevent lower esophageal sphincter tone decline? 1. Avoid cold stimulation and emotional excitement, and stay optimistic. Avoid all kinds of triggering factors, pay attention to keep warm in winter, prevent local exposure of limbs to cold environment, and keep the temperature of the ward between 22 and 23℃. Forbid the use of vasoconstrictive drugs and B-blockers, and avoid trauma. Actively encourage smoking cessation, as nicotine can cause vasoconstriction and affect blood circulation, and actively treat various diseases that cause vascular damage. Keep the skin clean, and disinfect the patient room regularly. 2.Avoid stimulating diet, avoid raw, cold, spicy and thick-tasting products. 3, appropriate outdoor activities, pay attention to the protection of exposed parts. 4.Eat slowly and not too full at each meal. 5, avoid high-fat food, reduce the intake of food that can reduce the pressure of the lower esophageal sphincter (such as chocolate, mint, coffee, onions, garlic, etc.). 6, the diet needs to be light, do not eat spicy food, do not eat acidic food, eat less pasta, can eat more rice, do not eat greasy food, do not eat animal fat, appropriate to eat some meat, eat less indigestible food, need to drink more water.