With the wide application of CFRP (Carbon Fiber Reinforcement Polymers), the related machining processes after molding are required for the assembly object. As the different limitations of the available CFRP machining processes make it hard to determine which one is better and what process conditions should be used. So, a hierarchy fuzzy comprehensive evaluation of CFRP machining processes is proposed in this paper based on the fuzzy soft set theory and subjectivity control, in which the fuzzy transformation is applied to conduct the first level and second-level initial fuzzy evaluation to get the assessment level, membership degree and confidence coefficients of each evaluation object; the “AND” operation of fuzzy soft sets is applied to implement the second-level fine fuzzy evaluation to get the superiority ordering of evaluation objects; the subjectivity check and control of expert opinions is conducted to improve the reasonability of evaluation results. By comparing the evaluation results obtained from the presented comprehensive evaluation approach undergoing the subjectivity control with ones of no subjectivity control and a traditional approach, the effectiveness of the presented comprehensive evaluation approach for three CFRP machining processes such as Mechanical Machining, Laser Cutting and Wet Cutting is validated.