The work aims to propose an improvement research method based on Quality Function Deployment (QFD) to improve the service quality of campus APP and combine qualitative and quantitative methods to ensure the credibility of the improvement scheme. Firstly, based on the seven-dimensional user demand list, questionnaires were used to investigate users' experience and expectation of using campus APP, and data reliability analysis and confirmatory factor analysis were conducted for user satisfaction of campus APP to ensure the accuracy of survey data and user demand model. Then, the planning matrix of the House of Quality in QFD was constructed by combining the user demand improvement rate and the entropy method. And next, literature survey and expert opinion collection were conducted to confirm the technical requirements, and construct the correlation matrix and technology incidence matrix of the House of Quality. Finally, on this basis, the importance degree of technical demands in the management demand was calculated, and the transformation from "user demand to technical demand" was completed. Several suggestions that can improve the service quality of campus APP were obtained from the analysis of House of Quality. Combined with the seven-dimensional user demand model, the QFD method can guide designers to make more reasonable design and improvement for campus APP, so as to improve the service quality of campus APP and provide solutions to other similar problems.