A modular display apparatus is provided. The modular display apparatus includes a plurality of display modules, a plurality of connectors, and a processor configured to divide the plurality of display modules into a plurality of groups based on a vertical direction, and based on an order of connection of at least one display module included in each of the plurality of groups, identify the location of each of the at least one display module included in each of the plurality of groups, and based on the identified locations of the display modules, display images, on each of the plurality of the display modules, corresponding to image signals received from an external apparatus.