Attachment is a basic mode of human emotions, which usually refers to people's emotional response in front of important others. For example, when you are around a familiar caregiver, you will feel a sense of security and trust, which is the embodiment of security attachment. On the contrary, when you meet a leaver, you will have anxiety and pain, which is the embodiment of insecure attachment. There is also an avoidant attachment, which usually means that when the baby needs attention and care, the person being cared for does not give enough attention and care.

Attachment can also be divided into physical attachment and psychological attachment. Physical attachment refers to physical dependence needs, such as getting nutrition and warmth through breastfeeding, which is a necessary way for infants to rely on. Psychological attachment refers to emotional dependence, such as further developing emotional connection, trust and enjoyment. Psychological attachment is produced by mutual communication, perception and influence between people, and people form an interactive self and mutual.

Attachment plays an important role in interpersonal relationships. Research shows that secure attachment embodies the healthiest and most stable interpersonal relationship, while insecure attachment usually leads to interpersonal problems. After many times of analysis, exploration and experiments, scholars' research on attachment is still deepening. Through the study of attachment, we can have a deeper understanding of the essence of human emotional communication and explore the important significance behind key words such as dependence, trust and interaction.