Disclosed in the invention is a B / S-architecture-based method of establishing an assessment and management system for prevention and curing difficulty of caries. The method comprises the following steps: S1, establishing initial basic information of a patient; S2, adding information including illness state explanation by the patient himself / herself, the medical history, and the personal history ofthe patient; S3, carrying out oral examination and acquiring a clinical examination result, a tooth state, a periodontal state, and a dentition state; S4, adding a risk assessment item and a difficulty assessment item of a symptom; S5, adding diagnosis and treatment therapeutic plans; S6, according to the diagnosis and treatment therapeutic plans obtained at the S5, adding treatment information;and S7, on the basis of a risk assessment level of the patient, generating a prognosis management plan of the patient. According to the invention, with establishment of complete electronic medical history contents of oral cavities of patients, information of the patients is classified precisely and the specialist physicians of the stomatology department obtain information of the patients conveniently. Because the prognosis management plan of the patient is generated automatically, long-term follow-up treatment of the oral patient is realized precisely.