Abstract: Aimed at the current defects in the block selection of profile control which is influenced by various factors and usually carried out blindly onsite,this paper introduces the Fuzzy Analytical Hierarchy Process (FAHP) into the block selection of profile control.Based on the 0.1-0.9 scales,this paper quantifies the appraisal parameters of the profile control,and establishes the Fuzzy consistent matrix.Combined with the maximum degree of membership,grade of membership of each parameter was optimized in the candidate blocks.Finally,combined with all these degrees of membership together,ultimate appraisal of each parameter was achieved.The quantitative and qualitative analysis was integrated,thus assignment of weighting factor was more objective.This method has been applied in the block selection of Polyacrylamide(PAM) Inversion Emulsion profile control.The result shows that this method is quite effective in reducing blindness of block selection,and the decision making is more reasonable and scientific.