The present invention provides a divided door structure capable of reducing change in a driving load when a door ascends and descends and smoothly controlling ascent and descent with small driving torque. The divided door structure includes: a pair of pulleys (7) vertically attached to each of frame bodies (2) on the right and left; a first cable (8) wound on the pair of pulleys (7) vertically arranged; a first door body (3) fixed to the first cable (8) and ascending and descending along a first guide member (10) by rotation of the pulley (7); a second door body (4) ascending and descending along a second guide member (11) arranged to be overlapped with the first door body (3); a second cable (9) wherein one end is fixed to the frame body (2) and the other end is fixed to the first door body (3); a wheel (14) supported by the second cable (9) and fixed to the second door body (4); and a driving unit (16) driving at least one among the pair of pulleys (7) vertically arranged.