First of all, there are two types of pacifier materials on the market, silicone and rubber. Rubber pacifiers are softer, sucking effort, but there will be a rubbery smell, sensitive to the taste of the baby may not be easy to accept. Silicone pacifier color transparent, no odor, high temperature resistance, closer to the mother’s nipple, soft and hard moderate, the baby is easier to accept, and can promote the secretion of saliva, to help the development of the upper and lower jaw, face muscles. Secondly, pacifier type and size should be adjusted according to the baby’s age. There are 3 types of pacifiers: round hole, cross-shaped hole and Y-shaped hole. Round holes are generally divided into 3 types of flow. S: small flow, suitable for 0 ~ 3 months can not yet control the amount of milk newborns. M: medium flow, suitable for 3~6 months baby. L: Large flow, suitable for 6~12 months babies. The cross-shaped hole is suitable for sucking juice, rice flour or other coarse particle drinks. y-shaped hole is suitable for babies who can control the amount of milk sucked and play while drinking. A teat that can be drunk in 10~15 minutes is usually the most suitable, and you should consider changing the teat if you drink too fast or too slow.