The present disclosure provides a foldable teleprompter, including a main shell used to be abutted with a lens, and a supporting plate and a beam splitter which are rotatably mounted on the main shell; the main shell is encircled into a box body structure with an opening in one side; the beam splitter can be accommodated in an accommodating space of the main shell after being flipped; after being flipped, the supporting plate can cover the opening side of the main shell to form a cover plate, so as to seal the beam splitter in the main shell.