Objective To understand the health status of the left-behind children in Wangmo county,psychological analysis of gender,age factors influence,and find the starting point of education for the shaping perfect personality of left-behind children. Methods By general condition questionnaire (self-designed),Eysenck (7 years old-15 years old) as the investigation tool,223 left-behind children as study group,87 non left-behind children were investigated as control group,and compared between the two groups and two groups of respective dimensions between sex and age. Results There were significant differences on two dimensions outgoing,conceal extent (P<0.05);In left-behind children,male and female students,there was significant differences in the spiritual and concealing the extent dimensions (P<0.05);dimensions of neuroticism and extraversion had highly significant differences in two age groups (P<0.01). Conclusions Psychological status of left-behind children in boys is poorer than girls,it shows that tendentious level of psychoticism and higher scores of lie;psychological condition of the high age group is relatively poor and its representation is classic introvert.