Introduction: The cause of dental and oral disease at children is a lack of knowledge in maintaining health. Preven- tive efforts to decrease incidence are by counseling or health education. Oral health education for children aged 11-12 years can increase knowledge. Especially in continuing health program called “little dentist’ programme. Oral Health Education during the Covid-19 pandemic can be held via online. The aim of this study was to know the difference knowledge level before and after with audio visual technique used platform zoom meeting for “little dentist” in elementary school in Malang. Methods: This study used the pre experimental method with One group pre- test-posttest design. The sample in this study were 30 student as little dentist. The sampling technique is performed with inclusion and exclusion criteria. The data were collected by using the results of pre-test and post-test as many as five multiple choice questions via Google form. Results: Most of the little dentist had knowledge at a moderate level at the pre-test score of 56.7%. The results of the post-test scores after the intervention showed that the little dentist’s knowledge was at a high level of 53.3%. Subsequent analysis uses the Wilcoxon test to determine the difference in the value of knowledge and obtained a value of p = 0.00 (p < 0.05), there was a significant difference in the pre-test and post-test scores obtained before and after being given intervention through zoom. Conclusion: There is a signif- ficant difference in the level of knowledge before and after oral health education with online audio visual technique little dentists in elementary school student in Malang.