In order to achieve "no suspension of classes" and "no suspension of classes" during the epidemic prevention and control period, the "Civil Engineering Construction" course of a university in South China adopted a multi-line platform teaching method, and achieved good results. This course is based on multiple online platforms such as Chinese university MOOC, architectural cloud courses, online course live platforms, QQ groups, etc., and the use of questionnaire surveys to evaluate the teaching effect, the results show that based on multiple online platforms Teaching provides students with rich and flexible learning methods, which can significantly improve students' independent learning ability, expand students' knowledge and improve learning effects. This application model of multi-online platform teaching provides new ideas for curriculum teaching reform during the epidemic.