In the process of enterprise development, the satisfaction evaluation of customer demand is helpful for enterprises to find problems and deficiencies, so as to better meet customer demand. In order to make the evaluation results of customer demand satisfaction more scientific and effective, a evaluation method of customer demand satisfaction evaluation integrating fuzzy Kano model and cosine similarity is proposed. Firstly, the customer demand elements obtained from preliminary questionnaire survey and in-depth interview are taken as the object of satisfaction evaluation; Secondly, the fuzzy Kano model is used to analyze the customer satisfaction value and attribute classification of demand elements; Then, cosine similarity is used to calculate the similarity value between the satisfaction value and optimal value of each demand element, that is, the weight value of customer demand satisfaction is obtained; Finally, the weight value of customer demand satisfaction is adjusted by the attribute adjustment coefficient of customer demand, and the final evaluation value of customer demand satisfaction is obtained. The fuzzy Kano model is combined with cosine similarity to evaluate the customer demand satisfaction. Taking the customer demand satisfaction evaluation of a company's electric vehicle charging equipment as an example, and comparing with the existing satisfaction calculation methods, the feasibility and effectiveness of the proposed method are verified.