If there is black caries in the teeth, according to the depth of caries and the patient’s feeling, different treatment methods are used: the first kind, the area of black caries in the teeth is very small, only the color has slight black, and there is no cold, hot, sour, sweet sensitivity or pain symptom, you can brush your teeth carefully and use the flushing device to flush out the food residue in the teeth, then it will prevent the black caries from developing gradually. Secondly, if the black caries site is big, and there is painful feeling when eating or brushing, and there is often food embedment, patients need to go to regular hospital stomatology department for filling treatment.