Objective：To understand the factors influencing the seeking of medical treatment through investigating patients and parents with chief complaint of six-year molar and to provide references for early prevention and treatment. Methods：Clinical examination was performed on 300 patients with six-year molars and the condition of six-year molars was recorded. The reason for seeking medical treatment，awareness of relevant knowledge of six-year molar and the population sociological features were investigated by questionnaires. Results：The urban and rural distribution，educational level and the knowledge structure of the parents were the influencing factors of seeking medical treatment. Conclusion：Various channels should be applied to popularize oral health knowledge，narrow the urban-rural gap and educational gap so that everyone will pay more attention on early prevention and treatment of six-year moral.