In the implementation of psychological testing technology, how to set the criterion question is one of the keys to implement psychological testing technology. In the practical application, there will be high false positive psychological test results of the traditional collinear question test, mainly because of the limitations and one-sidedness of the traditional collinear question in the setting. Now, with the development of society and the progress of the psychological discipline, the drawbacks of the traditional criterion question setting are highlighted. In order to overcome these drawbacks, it is necessary to start from the actual situation of the testee, new settings and development of paraprofessional questions, in order to improve the validity and accuracy of psychological testing techniques. This technique can play a greater role in the investigation of cases and provide a reliable basis for solving case.