The MBTI personality test has good reliability and validity,and can more accurately realize the delineation of different personality types. Criminals have a special personality that is different from that of non-criminals,and this personality can be reflected in the MBTI personality test to a certain ex-tent. When applying MBTI to the determination of recidivism and the possibility of recidivism,it is impor-tant to consider the MBTI personality type of the tested person and the extent of his/her tendency in this type,so as to provide a reference basis for the realization of a more appropriate punishment.