To provide a control device and a control method for a vane of a ceiling air conditioner wherein the velocity of an air stream exhausted from an exhaust outlet is increased by controlling the vane.

A control device for vane comprises an operation mode selection section 44 where once temperature desired by a user is selected for cooling operation or heating operation, a corresponding selection signal is outputted, a microprocessor 45 for outputting a rotation control signal with the selection signal, and vane driving sections 36, 40 for controlling the vanes 32a to 32d by driving motors 37, 41 with the foregoing rotation control signal.