I. Overview Stranger anxiety, commonly known as birth recognition. About 50% to 80% of babies have a period of recognition, usually starting at 6-7 months of age. Some babies start to cry and quarrel with strangers at 4 or 5 months of age, and some babies do not show recognition until they are over a year old, which varies from person to person. This may last for a few weeks or even six months. This is not a bad thing, it is their instinct to protect themselves. Clinical manifestations During the period of recognition, as long as the baby encounters new faces (even relatively familiar people), the baby will feel anxious and anxious, and will probably cry and quarrel. These are normal physiological reactions, when parents need to accompany and care. Three, how to deal with 3 months of age or less, although the baby can perceive the face of a person, but also gradually recognize the close people and strangers, but no memory preservation ability, so they will forget in a flash. However, after 4-6 months of age, babies begin to develop memory storage capacity and are able to distinguish between relatives and strangers, but they also develop a sense of fear and insecurity towards strangers, and thus become familiar with them. This phenomenon indicates that the infant’s perceptual and memory skills are developing, which is a normal process of psychological development and an innate ability to protect themselves. After 18 months of age, due to increased exposure to strangers, babies will gradually eliminate the fear of strangers, the phenomenon of recognition will gradually disappear. If the baby’s reaction is very strong, and lasts too long, parents should pay attention to, because this will prevent the baby to know things, narrow the baby’s cognitive range, parents must take the following measures at this time. 1, more encouragement, coddling will suppress the development of the child’s autonomy, so that they doubt their own ability to form a timid mentality about things. Therefore, in the case of ensuring the safety of the freedom to encourage children to explore interesting things, “mommy look at you, not afraid” more to give him some “strong heart” to enable the baby to overcome the timid mentality. Parents can also consciously give their children some challenges and exercise, in life, let the baby more help to participate, to develop his independence. 2, early exercise Parents can be in the child does not know how to recognize the time, consciously take the child more contact with other people. For example, let other people in the family help feed, drink, change diapers, tease and talk, hold and play, do simple games, through contact with other people, to help children adapt to a variety of people and environments. 3, less criticism Young babies mostly produce self-awareness with the views of adults, so parents should maintain a stable attitude and emotions towards their children, avoiding hot and cold, and do not take out your bad feelings on the baby. The baby has a sense of security will naturally be more bold to contact unfamiliar people and the environment. 4, more love and care Baby recognition is generally related to “fear”, the mother and family members around to create a warm family environment for the child, in the child recognition period stage, the mother should be patient, for the child suddenly cry do not reprimand. To give the baby a sense of security, so that he will slowly relax the nervous emotions.