A stereoscopic control method includes: establishing a specific mapping relation between a specific disparity value and a specific set of a first focal setting value of a first sensor of a stereo camera and a second focal setting value of a second sensor of the stereo camera; and controlling stereoscopic focus of the stereo camera according to the specific mapping relation. Besides, a stereoscopic control apparatus includes a mapping unit and a focus control unit. The mapping unit is arranged for establishing at least a specific mapping relation between a specific disparity value and a specific set of a first focal setting value of a first sensor of a stereo camera and a second focal setting value of a second sensor of the stereo camera. The focus control unit is arranged for controlling stereoscopic focus of the stereo camera according to the specific mapping relation.