Objective To compare the performance on the projective drawing of House-Tree-Person Tests between migrant children and resident children. Methods Synthetic House-Tree-Person Test was adopted to 78 migrant children and 87 resident children,and drawing were rated according to some encoding criteria,then scores on each item and dimension were compared between two groups. Results There were great difference in aggression (t=3.39),inferiority and withdrawal (t=6.23),depression (t=6.86) and anxiety (t=5.50) between the two groups (P all<0.01).The relationships between all the psychological dimensions were significant (r=0.28～0.59,P<0.05). Conclusion Migrant children scored higher than resident children on some mental health indicators like aggression,inferiority and withdrawal,depression and anxiety,and some efficient interference should be considered.