Abstract: The operational mechanism of the dislodged restrict appraisal mode and its impacts to the reliability of appraisal results are analyzed in this paper, creating a new method for appraisal reliability analysis. By reasoning of the results of from simple dislodged restrict appraisals to common dislodged restrict appraisals, and analyzing the location precision of the appraisal results with simulation method, two important results of reliability appraisal under the dislodged restrict appraisal mode are obtained, which lay a basis for experts to fully exert specialties and restrain subjective random.