Introduction: The public health bag is an essential and indispensable equipment of a public health nurse which she has to carry along during home visits. The technique of using the bag can be taught to student nurses in different ways. The aim of the study was to assess the effectiveness of video-assisted vs. demonstration method of teaching bag technique to student nurses from selected nursing colleges, Delhi. Methods: The conceptual framework was based on the systems model. The quantitative approach was adopted for the study with quasi experimental only post-test research design. Variables were age, gender and previous academic performance of students. The sample of present study comprised of 90 second year B. Sc. Nursing student nurses from selected nursing colleges of Delhi. The simple random sampling technique (lottery method) was used for selecting 90 B. Sc. Nursing II year students. The structured observation check list was used to assess the effectiveness of video assisted and demonstration method. A total of 11 experts from different fields established the content validity of the tool. Reliability was established through inter observer, percentage agreement method and it was found to be reliable. The method of data collection was direct observation technique. Result: The data were analyzed using descriptive and inferential statistics in accordance with the objectives of the study. The obtained mean difference between video assisted and demonstration groups was found to be statistically significant as evident from t value of 12.11 for df (60) at 0.05 level. Conclusion: The study findings revealed that the Video assisted and Demonstration groups were homogenous and comparable. It is inferred that the video assisted method of teaching was more effective than demonstration method of teaching among student nurses. There is no association between age, gender and previous academic performance with post-test score in video assisted group and demonstration group. How to cite this article:Kunjumon S, Rani S, Parveen S. Comparative Study to Assess Effectiveness of Video-Assisted vs Demonstration Method for Teaching Bag Technique to Student Nurses. Int J Nurs Midwif Res 2019; 6(2&3): 40-44.