Starting from the material,human,and environ-mental factors,this paper comprehensively analyzes the causes of cracks by combining the plane and profile mor-phological characteristics of cracks.A variety of methods such as data query,personnel inquiry,inspection review,material test,modeling and checking calculation are used to support the process inference,and a set of analysis pro-cesses and methods for the causes of cracks are formed.Finally,combined with specific engineering cases,a de-tailed discussion is carried out for reference.