To provide a musical score display device capable of automatically changing pages at desired timing without performing specific operation, regardless of musical instruments performed at the same time and the number of players.

The musical score display device includes: a storage function for storing a series of page images of a musical score together with a musical score name and the order of the page image; an image taking-in function (S422) for outputting a series of pieces of image data in which a subject is imaged, in real time; a phrase data storage function for storing the motion feature of a player when a certain phrase is played, by associating it with a page image corresponding to the musical score name, as a phrase data; and a page changing function (S426, S430) which displays the page image of next order following the displayed page image, when the motion feature of the player extracted from the output of the image taking-in function matches the phrase data which are associated with the displayed page image, when the page image of the musical score is displayed on the display device.