Acidophobia of teeth should be treated according to different causes, and the common causes are dentin hypersensitivity, dental caries, wedge-shaped defects, and so on. Commonly used treatments such as desensitization treatment, root canal treatment and crown restoration treatment. 1. Dentin allergy: commonly used such as sodium fluoride glycerin, strontium chloride glycerin, etc. repeated rubbing of sensitive areas or sodium fluoride liquid iontophoresis can effectively alleviate the allergic symptoms. Laser and other physical therapy also has a certain effect. Repeated desensitization is ineffective to consider doing filling surgery or artificial crown repair. 2. Dental caries: maintain oral hygiene, healthy diet, control the intake of sugary foods. Initially, use fluoride such as sodium fluoride glycerin to seal the fossa, or use silver fluoride to deal with caries holes to prevent further development of caries. If the defect is obvious, restoration treatment such as composite resin filling should be carried out. 3. Wedge-shaped defects: correct the acidic environment in the mouth, use sodium bicarbonate solution and other gargles. If the wedge-shaped defect is shallow and there is no dentin allergy, no special treatment is needed. Those with allergic symptoms can use desensitizing treatment such as tooth desensitizing agent or brush teeth with toothpaste with anti-allergic function to improve the symptoms; if the defect is deeper, filling treatment can be carried out. There may be other reasons why teeth are afraid of acid, it is recommended to go to a specialized hospital in time, after clarifying the cause of the disease, under the guidance of a professional doctor for standardized treatment. The above drugs should be used under the guidance of a professional doctor.