In the wake of the COVID-19 outbreak, the Ministry of Education issued a notice of "Suspension of classes without suspension of learning". In order to ensure that students can complete their theoretical courses while quarantined at home, colleges and universities across the country have launched an online teaching mode. Taking "Engineering Surveying" as an example, this paper summarizes the course design and implementation at the present stage. While teaching theoretical knowledge, it properly integrates ideological and political elements to truly realize the educational concept of promoting morality and cultivating people. Through the questionnaire survey, the teaching results were evaluated, the advantages and disadvantages of online teaching were comprehensively understood, and the optimization form was given according to the shortcomings of online teaching, so as to provide reference and ideas for the follow-up online teaching.