Common oral cavity diseases such as caries and periodontal diseases are mostly slow-onset. In the early stage, there is no obvious symptom, and it is not easy to self-awareness, but when there is pain and other uncomfortable symptoms, it may have developed to the middle and late stage of the disease, which is more complicated to treat, and the patient will suffer more pain and spend more money, and the treatment effect may not be very satisfactory. Regular oral health checkups can detect oral diseases early and treat them in time. When regular oral health examination, the doctor will also take appropriate preventive measures to prevent the occurrence of oral diseases and control the development of oral diseases according to the oral health condition. During the regular oral health examination, the doctor can also find some systemic diseases in the oral cavity and take appropriate measures to treat the systemic diseases. The first oral health examination for children should be conducted within 6 months after the eruption of the first milk tooth, that is, within the age of 1 year, mainly to check the eruption of milk teeth and assess the risk of caries, provide targeted oral hygiene guidance and establish the oral health record of children. After the age of 1, children should have a routine oral health examination every 2-3 months. 1.Check whether there are caries, gum and oral soft tissue health condition, tooth alignment and occlusion as well as tooth development. 2.Children with early caries should be treated with filling as soon as possible. 3.Take caries prevention measures in real time, such as sulcus closure and fluoride caries prevention. Generally, children aged 0-5 are examined every 2-3 months, children aged 6-12 are examined every 6 months, and children aged 12 or above can be examined once a year. The second national oral health epidemiological survey in 1995 showed that the prevalence of dental caries in the milk teeth of 5-year-old children was 76.55%, and each person had 4.48 milk teeth with dental caries on average. The school-age children are in the period of alternation of milk and permanent teeth, and their oral condition is changing rapidly. Therefore, regular oral health checkups can understand the loss of milk teeth, the development of permanent teeth, and the development of teeth and jaw relationship, so as to find out the problems and solve them in time. Regular checkups can help you understand your oral health degree with the help of doctors, carry out health care consultation, gain more oral health care knowledge and learn correct and effective self oral health care methods. Suggestion 1, to master the correct method of brushing teeth, brushing teeth should be taken seriously, otherwise it will leave the hidden danger of producing oral diseases. 2, to protect the teeth to regular check-ups, timely handling of the problems that arise, to stop the development of lesions. 3, the oral disease has formed to actively treat, many people are waiting for the teeth loose a great choice after extraction and then set the teeth, which is wrong. Denture can only restore part of the function of the natural teeth, so the natural teeth that can be retained through treatment must be retained.