In recent years, with the continuous development of highway construction in our country, the construction technology and technology progress of gongdao road has also greatly developed, and the construction quality of highway engineering has gradually been paid attention to. There are many factors affecting the road quality, including design factors, building materials quality factors and construction factors. The construction quality is related to the sense of responsibility, technical quality, operation machinery and construction technology of the construction personnel. In a word, the final product quality of the highway is a comprehensive problem, and the quality is a comprehensive reflection of various factors. After years of construction practice, the causes and control methods of building concrete cracks are preliminarily explored