A two year old toddler with four broken incisors may be due to dental caries, and treatment can be chosen based on the depth as well as the severity. General treatment includes life intervention, medication, surgery, etc. 1 Slight dental caries: dental caries is also known as tooth decay. Due to poor dietary habits such as eating desserts, beverages and other sugary foods, as well as infrequent brushing, the surface of the teeth is somewhat blackened, but the tooth body is not damaged. It is recommended to reduce the consumption of sweets, pay attention to the cleanliness of the mouth and brush the teeth in the morning and evening. 2. Moderate caries: the surface of the tooth is decayed to a greater extent, the damage caused to the surrounding neighboring teeth, the need to grind the decayed tooth tissue as soon as possible, if the removal of caries will be painful symptoms, the application of alcohol disinfection of the cavity pit, and fill the bottom of the hole after the bottom of the cushion, probably about 2 to 3 months to recover, and then a permanent filling. 3. Severe caries: If it belongs to severe tooth decay, you need to go to the hospital for treatment, after removing the decayed tooth tissue, you need to prepare the cavity shape and fill it with glass submerged cementum. If pulpitis is caused, root canal treatment is required. It is recommended that two year olds with these symptoms should go to the hospital for treatment so as not to affect their later recovery and life.