Children’s tooth pigmentation is mostly exogenous tooth coloration, i.e., foreign pigments entering the mouth or pigments produced by bacteria in the mouth are deposited on the tooth surface. It can be improved by maintaining oral hygiene and scaling procedures. Children’s tooth coloration is closely related to poor oral hygiene habits. Parents should urge their children to develop good oral hygiene habits, using the Pasteur brushing method to brush their teeth, and if they can’t master it well, they can use the arc method. If children are too young to brush their teeth, parents can use soft gauze on the fingertips, dipped in water or salt water after meals, scrubbing children’s teeth. If the children’s teeth pigmentation degree is heavy, affecting the aesthetic or at the same time accompanied by dental calculus, periodontitis, gingivitis and other oral diseases, should go to the hospital stomatology department using ultrasonic scaling for treatment. Also need to pay attention to eating habits, diet should be light, eat more fresh fruits and vegetables, eat less sweets and heavy pigmented food.