As the disseminator of human civilization, preschool teachers shoulder the sacred mission of cultivating children and play a variety of special roles in the broad expectations of society. Preschool teachers often bear great physical and mental pressure in complex and heavy mental work. Especially with the deepening of educational reform, the competition in education is becoming increasingly fierce, and the physical and mental health of preschool teachers is also facing an increasingly severe test. The mental health of preschool teachers is the foundation of preschool teachers' education, and it is the need of preschool teachers' own healthy life and children's psychological development. The object of preschool teacher education is children. Children's cognitive activities are concrete, but their psychological activities and behaviors are unintentional, and they begin to form their initial personality tendency, which is greatly influenced by teachers. Therefore, the mental health of preschool teachers is particularly important. Teachers with psychological barriers can not only become supporters, collaborators and guides of children's learning, but also have a negative impact on children's mental health. Therefore, how to improve and maintain the mental health of preschool teachers is a very important issue. So how should preschool teachers adjust their mentality? I think we should start from the following aspects.

(1) Preschool teachers should establish a correct view of roles and overcome role conflicts.

The professional role of preschool teachers is a general pattern of behaviors and attitudes that are determined by social status and meet social expectations. The diversity of society's expectations of preschool teachers and the diversity of preschool education activities determine the diversity of preschool teachers' social roles. Preschool teachers can truly form their professional roles only by fully understanding their social responsibilities, controlling and measuring their own behaviors in personal experience and acceptance, and finally consciously transforming social requirements into personal needs. In order to establish a correct role view and effectively overcome the psychological obstacles caused by role conflict, the key lies in the deepening of preschool teachers' understanding of their roles in educational practice and their firm belief in preschool teachers' profession in role identification. On the one hand, the fashion of respecting teachers and attaching importance to teaching in society and the environment in which kindergartens can give full play to their talents are the objective factors that affect preschool teachers to establish their role consciousness in educational practice; On the other hand, preschool teachers have a deep understanding of the social value of their profession, and personal experience of honor and pride as preschool teachers is a subjective factor. Preschool teachers should pay attention to broaden their horizons, cultivate their interests, update their educational concepts, and boldly break the traditional role expectation that does not meet the requirements of the times. Only in this way can kindergarten teachers achieve "reliance on their hearts" in the process of playing professional roles, effectively avoid the psychological internal friction caused by role conflicts, and maintain the good psychological qualities of educators such as fairness, humility, enthusiasm and optimism.

(2) Preschool teachers should establish a correct view of children and overcome cognitive bias.

Children are the most important factor and the foundation and starting point of educational activities. Children are people who need development and have development potential. The ultimate goal of educational activities is to promote the harmonious development and healthy growth of children. Modern education increasingly emphasizes children's dominant position, that is, the center of children's educational activities, and teachers, textbooks and all teaching methods should serve children. This requires preschool teachers to always proceed from children's personality, respect children's hobbies, and give full play to children's main role in educational practice. Preschool teachers should establish a correct view of children and education, regard respect and care for children as the starting point of all educational activities, and treat all children's behaviors fairly and equally, including their shortcomings and faults. This is not only a requirement for preschool teachers' mental health, but also a requirement for preschool teachers' moral cultivation.

(3) Preschool teachers play a good professional role, improve the relationship between teachers and students, and have a successful career.

Preschool education is a creative spiritual activity, which embodies the painstaking efforts of preschool teachers. A truly successful education will inevitably cast teachers' spiritual characteristics, such as ideals and beliefs, intelligence, will and emotion, which is a portrayal of teachers' personality strength. Preschool teachers with good achievement motivation always win affirmation by completing the sacred mission of cultivating children to reflect their own life values. In order to effectively alleviate the psychological frustration caused by motivation conflict, preschool teachers rely on society to constantly improve the evaluation mechanism of preschool education from ideology to system guarantee and improve their social status; On the other hand, it also depends on the kindergarten teachers themselves to frankly face up to the existence of motivation conflicts. As a kindergarten teacher, we should be able to play the role of a self-directed learner, enrich our educational theory and professional knowledge through continuous learning, and promote our development to the direction of expert and scholar teachers.

In addition, preschool teachers should pay attention to the code of conduct. When the bad mood has occurred, we can change the mood through some behavior changes, which belongs to reaction regulation. Perhaps these behaviors are trivial, but they are effective ways to get a good mood. For example, participating in cultural and sports activities; Change your facial expression and smile at yourself; Change your walking posture, hold your head high and strut; Carry out muscle relaxation training; Tidy up the desk or wardrobe to keep everything in order; Talk to a friend or something. These behaviors can vent emotions, or divert attention, or produce positive hints. Regular use can enhance the ability of self-regulation of emotions.