Provided is a document reading device capable of preventing deformation or twist that occurs in a document feeding device from being transmitted to a reading carriage formed in the document feeding device. The document reading device includes: a second reading carriage (3) provided for a document feeding unit, for reading a face different from the document face read by a first reading carriage; a support frame (51) having support faces (53) for supporting the second reading carriage (3); holding members (54) for holding the second reading carriage (3) by sandwiching the second reading carriage (3) between the holding members and the support frame (51); and elastic members (55) provided between the second reading carriage (3) and the holding members (54) and pressing the second reading carriage (3) toward the support frame (51). A curved surface is formed on either the support faces (53) of the support frame (51) or faces (42) supported by the support faces (53) in the second reading carriage (3).
