House-tree-person is a psychological projection test that evaluates and understands the overall
personality of the subjects through the form of drawing. In this paper, we have reviewed the main
contents of the House-tree-person Test, including its development history, theoretical basis and main
advantages, and elaborated on the application of the House-tree-person Test in children’s mental health
work from three research areas: clinical, risk children and psychological counseling, which provides a new
perspective for understanding and improving children’s mental health, and also provides directions and
ideas for future research.