Handling of the pre-hospital stage in Indonesia was very weak, both in terms of infrastructure and human resources. Lack of public knowledge about the signs and symptoms of acute stroke was still being a major problem of delayed management after an acute stroke. This study aimed to determine the effect of audio-visual media health education on public knowledge in providing first aid to stroke patients. The design of this study used one group pretest-post test design. The population in this study was all of people aged 17-35 years in Balongwono Hamlet, NA. 20 CA. 10, Wonomlati Village, Krembung District, Sidoarjo Regency, as many as 43 people. The sampling technique of this study was total sampling so that the study sample was 43 people. The study instrument used SAP, laptop, and questionnaire. Data analysis used crosstab. The results of this study suggested that most respondents had less knowledge before being given health education, as many as 28 people (65.1%) and after being given health education, most of them had good knowledge, as many as 23 people (53.5%). The results of the analysis suggested that all respondents experienced an increase in knowledge after being given health education. Audio visual aids are capable of displaying images, writing, animations that move and are accompanied by sound, helping to give the first concept or the right impression, encouraging interest, saving time, making memories of lessons longer and increasing intellectual knowledge.