Pacifiers may lead to excessive dependence on the baby, teeth deformation and dislocation and other hazards, the specific analysis is as follows: 1. Excessive dependence: If the baby uses the pacifier for a long time, the baby may be overly dependent on the pacifier and cry when it is taken away, which has a bad effect on the baby’s physical development and sleep quality. 2. Teeth deformation and dislocation: after the baby uses the soother, it may lead to deformation and dislocation of the teeth in the mouth, which will affect the beauty and normal use of the teeth in the future. It is recommended not to give the baby a long time to use the pacifier, can be used appropriately when crying, have a certain soothing effect.