The invention relates to a content item display method and device, and a storage medium, and belongs to the application field of electronic technologies. The method comprises the following steps: determining a target display position in a playing picture of a video in the playing process of the video; acquiring a to-be-displayed content item; and displaying the content item at the target display position. The content item display method provided by the invention solves the problems of single advertisement display format and lower flexibility in related technologies. The content item display method is used for displaying content items.