Dye Chemistry is a professional core course for undergraduates majoring in Applied Chemistry. Knowledge of dye classification, structure, preparation method, dyeing mechanism and application performance is the content of this course. During the novel coronavirus pneumonia outbreak, our teaching team supported cyber source teaching with the help of QQ resources and enterprise Wechat groups. Through the data support and interactive communication section of the learning platforms, real-time tracking and analysis of students' learning situation can be carried out to effectively complete the teaching task.