After the COVID-19(Corona Virus Disease 2019), carrying the online teaching activities in all universities provides the important thought to launch the efficient teaching and effective study for professional courses under public emergency conditions. Considering the integration path of college education and online teaching, aimed to the online process of professional courses for geotechnical majors, some problems about the significant differences in shared teaching resources, consume of digestion and reconstruction for teacher-student relationship, mismatch of teaching hardware. Thus, corresponding teaching design has been proposed in detail related to the systematical online teaching process, optimization of teaching content keeping pace with the times, diversification of teaching mode, multiple arrangement of student assignments, process-oriented implementation of examinations, realizing the diversified operation of online teaching mode, boost lift of improvement of students’ autonomous learning ability, determination of multiple examinations and assessments to promote the effect of online teaching mode. All the above achievements can be significant guidance for universities to make large-scale open teaching activities better under the public emergency conditions.