Objective To explore the application effect of micro-course combined with dermoscopy pictures integrated with ideological and political elements in the teaching of "Psoriasis" chapter of "Dermatology and Venereology". Methods From February to July 2023,34 emergency undergraduate students of Capital Medical University who studied theoretical courses in Daxing Teaching Hospital, Capital Medical University were selected as the research objects. Taking the chapter teaching of "Psoriasis" in dermatology and venereology as an example, the ideological and political elements were integrated into the microcourse, combined with the skin lesion dermoscopy pictures for teaching, and the teaching effect was continuously strengthened in the three teaching links of pre-class preview, theoretical teaching and probation practice. The scores of 34 emergency undergraduate students were analyzed and their satisfaction was investigated. Results The scores of 34 emergency undergraduate students all reached more than 70 scores, with an average score of (90.08±2.25) scores, and the proportion of 90-100 scores reached 52.94%(18/34); the satisfaction questionnaire showed that the total satisfaction rate of the five items of interest, theoretical knowledge mastery, self-learning ability training, clinical practice ability training and problem-solving ability training was higher, reaching 96.30%, and the total satisfaction rate of thinking ability training was lower, which was 59.26%. Conclusion The application effect of micro-course combined with dermoscopy pictures integrated with ideological and political elements in the teaching of "Psoriasis" chapter of "Dermatology and Venereology" course is accurate, the students' test scores are ideal, and the teaching satisfaction is high, which is worthy of application in teaching.