This study explores the mediating effect of genetic modification (GM) belief in the relationship between abnormally shaped foods and consumers' risk perception in Taiwan. A convenient sample of 676 adult participants were randomly selected from groups of an online Social Media LINE. The results reveal that participants perceive a strong belief that abnormally-shape foods are the result of GM technology, and this GM belief resulted in higher risk perceptions for the abnormally-shape food products. Thus, GM belief serves as a partial mediator of the food shape-abnormality effect on risk perception. Government entities and food industry actors should take these findings into account to develop effective communication strategies.