The problem of concrete cracks is a common engineering problem that is difficult to solve.This paper analyzes and discusses the causes of some common cracks in concrete engineering from the aspects of design, materials, mix ratio, construction site maintenance and so on. According to the causes of concrete cracks, measures to control crack development are proposed in the aspects of concrete structure design, selection of concrete materials, optimization of mix ratio, and maintenance of construction site.According to relevant literature, and summarized the treatment methods of concrete cracks: surface treatment method, filling method, grouting method, structural reinforcement method, concrete replacement method, electrochemical protection method, bionic self-healing method