How to measure the level of government service performance from the public and social perspectives is a hot topic of academic concern and discussion. This paper concretizes the public value in the field of China, puts forward the public value system of government service performance evaluation, and constructs the index system of government service performance measurement from the dimensions of mission, tool and equity value. This paper introduces user experience evaluation in the field of psychology and marketing, and organizes the investigator to simulate the identity of an official to conduct on-line and off-line user experience and empirical analysis on the government service performance of 10 counties in A city. The study found that the local government in the process of government service construction has low transparency, digital transition lag, response feedback poor effectiveness and other obvious problems, the reform pay more attention to the value of tools such as“Efficiency” and“Technology”, while the value of rights and interests such as“Response” and“Convenience” are weakened. This paper constructs the government service performance measurement index system from the perspective of public value, which is expected to provide theoretical basis and evaluation criteria for government service construction. This paper introduces user experience evaluation into the field of government service, in order to observe the real performance of government service from the perspective of public and social demand. Through first-hand data analysis, help enhance the accuracy and authenticity of the evaluation. In this sense, it provides a new attempt for government service performance evaluation.