The study examined the impact of trait interest and pre-visit social media use on visitors’ engagement level during art museum visiting. Twenty-eight adults completed a trait interest survey and randomly assigned to one of the 2 (high trait interest vs. low trait interest) x 2 (with pre-visit info acquirement on social media vs. without pre-visit info acquirement on social media) factorial design situations. Participants were asked to go to the art museum physically and finish the second survey about engagement as soon as they visited the specific exhibition. Results revealed that there was a main effect of art museum goers’ trait interest level on affective engagement level. This study considered both the value of visitors’ personality characteristics and social media use on engagement under art museum setting, devoting to offering museum-goers a better experience in this information generation. Besides, this study desired to give designers doable implications about exhibition design.