The problem of disconnection between psychological research and psychological practice has existed
for a long time, and psychological research needs to be diversified and scientific in research methods. Case study
has been on the front line of psychological practice, which can enrich psychological research. According to the
research in recent 5 years from China, descriptive case studies are far more than experimental ones. The subjects
of the study were mostly children, followed by adolescents, young children and the elderly, and the least were
middle-aged people. In addition, a variety of special groups and policy focus are also popular research; In the
aspect of research content and applied theory, the present case psychology research presents the diversification
trend, among which the applied theory is becoming more and more comprehensive. In general, domestic case
psychology research has been more and more attention and application, and closely connected with the practice.