The purpose of this lecture is to enable students to acknowledge the basic digital marketing theories and skills. In view of weak background of students' professional knowledge. The lecture starts with cases and analyze the products and phenomena that students are familiar with and interested in life, such as short video, KOL, live broadcast, Tiktok, etc. This lecture combines the case with basic theory of marketing, as well as methods and skills, aim to students' interest, and guide students to further explore.