Objective:To develop a personality disorder inventory for undergraduates. Method:Based on three diagnostic criteria and clinic experience,the questions were collected after item revision and item analysis of three samples. A total of 425 undergraduates responded to the formal questionnaire. The data of formal questionnaire were used to evaluate the reliability and quality.Result:The whole questionnaire was compose of 160 items including five repeated items for reliability of the respondents. The whole inventory was consisted of ten factors, they were the borderline, the antisocial, the schizoid, the schizotypal, the avoidant, the paranoid, the obsessive-compulsive, the histrionic, the dependent, and the narcissistic. The ? coefficient of the whole questionnaire was 0.94, and the test-retest reliabilities was 0.85(P