Six-year-old teeth caries can not do fissure closure after the first need for fillings, and regular oral cleaning in daily life. 1. Fillings: six-year-old teeth in the caries has appeared after the changes, is not able to do fossa closure. It is recommended to go to the stomatology department of regular hospital as soon as possible to carry out local abrasion and filling operation on the carious parts, which can effectively remove the carious tissues, so as to ensure the health of the surrounding dental tissues and avoid the aggravation of dental caries. 2. Oral cleaning: For people who have already had dental caries, regular oral cleaning should be carried out in daily life. Every time after eating should be timely brushing, and clean up the food debris in the teeth, at the same time can be every 6 ~ 12 months for a dental cleaning operation, can also be effective in cleaning the oral cavity. Six-year-old teeth caries should be carried out as soon as possible cavity treatment, and good oral protection.