Under the epidemic situation of COVID-19, university students have different levels of anxiety, depression, and other psychological problems, and these differing levels present different challenges. Therefore, universities and relevant departments should carry out accurate psychological health education for university students. Through research, this paper found that students' psychological problems during the COVID-19 epidemic were mainly reflected in four aspects: depression, interpersonal relationship, sleep and eating disorders, and compulsive behavior. Through the discussion of family of origin, self-awareness and motivation attribution, and social pressure, this paper analyzed the causes of psychological problems. The information resources of the network are usually unstructured data, and the text information, as the most typical unstructured data, occupies a large proportion. Moreover, this text information often contains users' emotional response to major events. In this paper, a data preprocessing system is designed, and three data preprocessing rules are defined: expression data conversion rules, data deduplication rules and invalid data cleaning rules. The characteristics of online community text data are analyzed, and the text feature extraction method is selected according to its characteristics. The results of this study show that the proportion of university students with psychological problems is about 23%, which is slightly higher than the research results during the non-epidemic period. This paper suggests that college students should master methods of self-regulation, improve their levels of physical exercise, improve their physical fitness, and establish and improve their defense mechanisms to alleviate psychological conflicts and pressures.

This paper utilizes the A-B-A-B reversal experimental design for the single-subject research, to study the self-injurious behavior of a sixth-grade student with severe autism, aiming to explore the intervention effect of sports games on the self-injury behavior of children with severe autism. The results showed that, the self-injury behavior such as, the number of times of biting the back of the hands, and picking the noses is reduced in the study subject following sports games intervention plans, however, the self-injurious still exists, especially when the study subject in an unfamiliar environment, further indicating that the self-injurious behavior of children with severe autism cannot be completely eliminated by sports games alone. Concluding that, self-injurious behavior of children with severe autism cannot be completely eliminated by sports games, a comprehensive intervention with multiple approaches is still required to achieve optimal results.

This paper aims to verify the family support situation for primary school children with intellectual disabilities learning in regular class and to explore various educational strategies to promote their development. A self-made questionnaire was used in this survey, and the parents of 380 intellectual disabled students were the subjects of this survey. It turns out that the overall family support for intellectual disabled children learning in regular class in China is good, but it is affected by the degree of obstacles. Factors such as grade, gender, and parental education had no significant effect on family support. It is the shared responsibility of the government, schools, and parents to promote the level of family support. Governments at all levels must implement family support projects, schools must carry out family education guidance to impart scientific parenting knowledge, and parents must take note of their own responsibilities, so as to promote the physical and mental development of children with intellectual disabilities.