Abstract: Provided is a structure for preventing deformation of a reading table, which prevents deformation of a reading table itself, solves a problem that a gap is generated when a support of the reading table is rotated and coupled, and thus prevents a standing paper from falling off, and relates to a pressing structure for preventing deformation of a reading table, wherein a pressing member is located at a center of a rear surface of a reading table, and when a first support member is rotated at a predetermined angle, a central part of the reading table is pressed by a support member, and thus a predetermined interval is forcibly formed between the reading table and lower corners of two sides of the first support member.