Abstract: Fuzzing test is one of the mainstream software vulnerability detection technologies and has been widely applied across various fields.In recent years,significant progress has been made in the research of fuzzing test case generation techniques.Firstly,this paper reviews the development of fuzzing test case generation technology,classifying and summarizing relevant research while providing a comprehensive comparison.Secondly,based on an in-depth study of fuzzing test case generation techniques,this paper establishs a framework for constructing test cases through both generation-based and mutation-based approaches.Subsequently,this paper categorizes fuzzing test case construction techniques,delving into the process by which fuzzers extract features from program structure and semantics and combine feedback information to generate test cases.Furthermore,this paper classifies and elaborates  on the challenges and tasks faced by existing fuzzing test case generation techniques in four key areas:browsers,network protocols,compilers,and operating systems,followed by a systematic summary and comparative analysis.Finally,this paper discusses the limitations and potential solutions of current fuzzing test case generation techniques from multiple perspectives and outlines promising future research directions in this field.

Key words: fuzzing test, test case generation, seed optimization strategy, vulnerability mining, software security