A gear shift control device of an automobile including a driving motor, a relay clutch capable of disconnecting an engine, includes memory storing a gear shift map for determining the switching start timing of the gear position, a transmission control unit that switches the gear position based on the gear shift map, a regeneration control unit, and a relay clutch control unit. The gear shift map includes a cooperative regeneration map and non-cooperative regeneration maps that define the thresholds of relatively low revolutions. The threshold of a predetermined low gear shift point is defined to be smaller than the thresholds of the gear shift points higher than the predetermined low gear shift point on the downshift side in the non-cooperative regeneration maps, and is defined to be smaller than the threshold of the predetermined low gear shift point on the downshift side in the cooperative regeneration map.