The invention discloses a two-line and N-row outer-drive spherical wheel type combined plane unmanned garage which is reliable in performance, low in cost, capable of achieving large-capacity and high-density parking, capable of increasing the number of parking spaces by multiple times in unit area, provided with at least 2 rows and at most 80 rows and capable of parking and picking up automobiles automatically. The combined plane unmanned garage is composed of a plurality of two-line and N-row outer-drive spherical wheel type garages, namely front and rear automobile automatic transposition equipment systems, the automobiles can be parked and picked up automatically, the number of the parking spaces in an underground garage can be increased by multiple times by changing the layers where the automobiles are located through an automobile elevator, and cost is reduced by 30-85%.