The section-guide graduated ruler for Caesarean section according to the present subject matter includes: a strip-shaped vertical tape having pointed upper and lower ends and having a length corresponding to the distance from the mother's navel to clitoris, and a horizontal tape coupled so as to intersect with the vertical tape, the horizontal tape having a length corresponding to the length of both ilia, thereby guiding a Pfannenstiel incision during Caesarean section.