Cancer is a significant health problem for people around the world, one of which is cervical cancer. It is a malignancy of the cervix and categorized as second highest in the world and Indonesia. The incidence of this disease is almost 80% of cases occur in poor and developing countries, half of which end in death. In Indonesia, more than 70% of cervical cancer cases are at an advanced stage. The Acetic Acid Visual Inspection (IVA) method for early cervical cancer detection is essential for every fertile age woman (WUS). IVA examination requires motivation. The provision of health education is needed to increase the motivation of WUS to carry out IVA examinations. Following the times, the condition of adequate health education is carried out through online media. This study aims to determine the effectiveness of online-based cervical cancer prevention in increasing the intrinsic and extrinsic motivation of WUS to carry out IVA examinations. The type of research used in this study is quantitative research with a quasi-experimental design with one group pretest-posttest. The research will be conducted at the Public Health Center of Denpasar City. The number of samples used as many as 120 people using the accidental sampling method. The research instrument used a questionnaire. Hypothesis test using the t-paired test. The findings showed that the provision of online-based cervical cancer prevention health education in the form of video and chat IVA WhatsApp effectively increased motivation to carry out IVA examinations.