Self-confidence is a psychological tendency of students in their study. The formation of self-confidence has a great relationship with the personality and will of others, and internal factors play a major role in the psychological development and changes of students. The subjective reasons for students' lack of self-confidence are highlighted in the following points:

(1) inferiority complex. The main psychological reason that hinders the establishment of self-confidence is inferiority, which is a psychological tendency of self-denial. There are often the following factors that cause learning inferiority. For example, I think that my intelligence is not as good as others, that my self-evaluation is too low, that I am born with poor learning ability, and that I am "not the material for learning", giving up on myself and holding my head in front of students with good academic performance. It is also possible that you have suffered setbacks and failures in your study, and your psychological ability to bear setbacks is poor, so you can't treat them correctly, resulting in pessimism and negative emotions, loss of self-confidence and inferiority.

(2) fear. Some students get scared when they hear others say that mathematics is difficult to learn before learning it. This kind of students are generally afraid of difficulties and lack innovation and enterprising spirit. Among these students, girls account for a large proportion. Mainly due to the timid topic, fragile personality and weak psychological endurance, it is easy to produce mental tension, anxiety, fear and anxiety when frustrated. Coupled with the influence of old ideas, it is always believed that women are not as smart as men, and parents and teachers have lower expectations and trust for girls than boys, which gives girls a bad psychological hint.

(3) inert psychology. Laziness is a bad psychological state of not striving for progress, doing nothing and slacking off. Some students fail to develop diligent study habits, lack competition consciousness, give up in the face of competition, especially after experiencing certain failures in their studies, and thus lose the motivation to achieve success, resulting in laziness.

Based on the above understanding, school education should change the concept of education and teaching, cultivate and protect children's self-confidence to the maximum extent, enable them to establish lofty ideals, have a sound personality, and enhance their ability to resist setbacks and adapt to the environment.