Abstract: Water Analytical Chemistry is an important professional basic course for water supply and drainage science and engineering specialty. In terms of the teaching problems of Water Analytical Chemistry in pandemic situation, the online teaching scheme of being "student-centered" is implemented to fully mobilize students' enthusiasm and increase interactive links. Teachers keep close contact with students, build a strong psychological defense line against the epidemic and take care of students' mental health. These measures have stimulated students' learning initiative and enthusiasm during the teaching process of Water Analytical Chemistry during the pandemic period, and improved the teaching quality of the course.