China is a country of frequent disasters, serious disasters not only reflect in natural disasters, but also in mining disasters, gas explosion, artificial manufacturing and so on. China’s disasters have the characteristics of a wide range of waves, high frequency of occurrence, a long duration, serious human and financial loss and so on. Civil engineering, which widely exists in people’s life, is the basic engineering of disaster prevention and mitigation, and its attribute determines its importance in disaster prevention and mitigation. Therefore, this paper analyzes the importance of civil engineering in disaster prevention and mitigation based on the attributes of civil engineering, aiming at promoting the development of disaster prevention and mitigation in China.