An apparatus for automatically turning a page of a book comprises a casing 10 on which a music book 5 can be placed in an opened state; a page holding means 40 which is installed within the casing 10 and holds a page 6 of the opened music book 5 to be turned and a turned page 7 thereof; a page turning means 50 which is installed within the casing 10 to turn a page of the opened music book; a driving member 60 for driving the page holding means 40 and the page turning means 50, a manipulation member 110 for manipulating operations of the driving member 60, and a control unit 130 for controlling the operations of the driving member 60 for turning a relevant page of the music book 5 placed on the casing 10, in response to signals from the manipulation portion 110.