First of all, family pressure is the main reason for the psychological barrier of left-behind children. In the long-term left-behind life, the lack of family ties makes children become withdrawn and even feel abandoned by their parents. They lack praise, love, warmth and interest. Without good partnership, communication with others is seriously affected. It leads to serious trauma to the child's mind, increases mental stress and reduces the ability to resist setbacks. Secondly, personal physiological and psychological reasons are the internal factors of psychological obstacles. Adolescent children are curious, at the same time, their physiological metabolism is great, and their economic dependence is in conflict with their self-consciousness of striving for independence. Finally, school psychological counseling and education are not in place, teachers' ability is poor, and they don't pay attention to problem students, which comes down to ideological problems and can't correct their psychological problems in time.

In the process of educating left-behind children, teachers should constantly strengthen effective communication with students, look at problems from the perspective of left-behind children, and analyze their "psychological" problems and their roots. First of all, teachers should go deep into the class to understand the personality characteristics of left-behind children, and further shorten the psychological distance with left-behind children through extensive contact, communication and exchange, so that students are more willing to communicate with teachers. Secondly, teachers should fully understand the learning and thinking information of left-behind children. Only when teachers fully understand the psychological activities of left-behind children can they open the door to the hearts of left-behind children through care, emotion and related psychological counseling strategies. In the teaching process, we can find educational approaches and management methods that are more suitable for the personality characteristics of left-behind children, and then achieve the role of psychological quality education.

Parents, in particular, are closely related to his life since childhood, and the information obtained from parents is irreplaceable by anyone. Children who lack love from childhood are subconsciously eager for love, so sometimes they take an extreme way, such as pretending to be sick, to get protection and care, rather than just satisfying this lack of love through the efforts of others. Teachers should often chat with such children with incomplete families, help them solve problems and pay more attention to their study and life. Once they are found to have psychological problems, they should be corrected in time. Through mental health education, let them establish a life belief of self-reliance and self-reliance.