We created a video to promote understanding of low-dose contraceptives (OC) and emergency contraceptives (ECP), conducted enlightenment through viewing, and verified the effects. We produced a video about "the effect of OC and how to take it" and asked women aged 20 to 34 from all over the country to watch it and conducted an online survey one week later. Statistical analysis of the increase in the number of correct answers to 9 general contraceptive knowledge items and 11 OC/ECP knowledge items showed an increase in the number of correct answers due to watching videos and a tendency for the group wishing to use OC to have a higher number of correct answers. This suggests the necessity of deepening knowledge understanding through enlightenment.