At 18 months of age, most babies have 8 teeth, which is considered normal, and at this age, the upper and lower first molar teeth start to grow. Baby’s teeth eruption time as well as the order of individual differences are relatively large, but also by genetic, endocrine, food traits of the influence of the 18-month-old baby most of the growth of 8 teeth, the beginning of the first milk molar, or has grown 4 milk molar. If you consider that your baby’s teeth are delayed in eruption, pay attention to balanced nutrition for your baby, eat more food with high calcium content, take vitamin D orally to promote calcium absorption, and eat some harder food in moderation, which will help to promote the eruption of teeth. If necessary, go to the hospital for examination to exclude disease factors, such as hypothyroidism and calcium deficiency.