Objective To explore the effect of short-form video applied in health education for maximising fathers′ support of breastfeeding. Methods A total of 103 primiparous women and their husbands were divided into two groups chronologically. The control group (n=52) received usual health education,while the intervention group (n=51) additionally used short-form video for health education. Results Compared with the control group, the intervention group had significantly higher paternal breastfeeding self-efficacy and satisfaction of primiparous mothers with their partner′s participation in breastfeeding on postnatal day 42, as well as high rates of exclusive breastfeeding on postnatal day 3 and day 42 (all P<0.05). Conclusion Application of short-form video in health education can improve father′s confidence in supporting breastfeeding and mother′s satisfaction with their partner′s engagement in breastfeeding, thus to promote exclusive breastfeeding.