The age of baby’s milk teeth is usually around 4~6 months, and the age of permanent teeth is usually around 6-7 years old. Some babies teething time will be slightly earlier or later, there are some individual differences, found abnormalities in time to consult a doctor, to ensure that the baby normal teething. 1. Baby teething time: babies usually start to erupt their milk teeth at about 4-6 months of age, and then come out at the age of two to two and a half years. If it lasts until 8 months and still no teeth, you need to go to the hospital in time for examination to find the cause and give symptomatic treatment. 2. The baby grows permanent teeth time: the baby since the age of 6 ~ 7 years old began to gradually permanent teeth eruption, milk teeth slowly loose off, usually 12 ~ 13 years old when the permanent teeth come out. If there is an abnormal teething situation need to consult a doctor in time to avoid blind treatment. It is recommended that parents should strengthen the baby’s nutrient intake, add complementary foods at regular intervals to ensure balanced nutrition, strengthen the baby’s daily care during teething and avoid stimulation of undesirable factors.