Children’s teeth are very yellow may be caused by food residues, but also may be caused by the consumption of pigmented foods or medications, etc., should be based on the cause of specific treatment. 1. The most common factor for yellowing of children’s teeth is that they do not brush their teeth on time, resulting in poor oral hygiene, causing tartar, yellowing of teeth and a series of symptoms. At the same time, children love to drink pigmented beverages, which can also easily lead to yellowing of the teeth. Parents should supervise their children to brush their teeth in the morning and evening, rinse their mouths after meals, develop good oral hygiene habits, and eat fewer sweets and carbonated beverages to protect dental health. 2. When children’s teeth are still in the developmental stage, if they take tetracycline drugs at this time, it may lead to children’s teeth become yellow and enamel underdevelopment and so on. At this time, you need to immediately stop using drugs and go to the regular hospital for decoloration or veneer treatment. It should be pointed out that in any case, parents need to train their children to develop good oral hygiene habits, reduce the intake of sweets and carbonated beverages, to ensure the health of children’s teeth.