The invention provides tooth desensitization paste components and a preparation method, and relates to paste for treating delay sensitivity symptoms and a preparation method of the paste. The paste comprises compound galanga extractum, carboxymethyl cellulose sodium, polyoxyethylene sorbitan monoleate, glycerine, monosodium phosphate, calcium carbonate, a chlorophyll 3% aqueous solution, ethylparaben, D-sodium isoascorbiate, saccharin sodium and purified water. The tooth desensitization paste components adopt traditional Chinese medicine compatibility, have the effects of removing dirt with spices, clearing heat, removing toxicity, relieving a pain and reducing the swelling, are mild in medicinal temperament, and small in side effects, and can solve the tooth allergy fundamentally. In addition, one reason for the tooth allergy lies in that foods etch dental enamels to enable a protecting cover of a tooth to be damaged. The tooth desensitization paste components comprise calcium hydrogen phosphate and calcium carbonate, so that on one hand, the tooth desensitization paste components can be used as a pH buffering agent to neutralize acidity of the oral cavity and reduce damage to theprotecting cover, and on the other hand, natural components forming dental enamels, such as Ca and P can be released, so as to repair the protecting cover and protect the tooth at the same time.