An automatic analysis device, an analysis method, and an analysis system are provided. The automatic analysis device comprises an incubation unit. When analyzing a sample under test, the incubation unit is controlled to rotate according to a predetermined transport cycle, wherein each transport cycle comprises at least one fixed transport sub-period in which the incubation unit is rotated a first rotation distance, and at least one self-adaptive transport sub-period in which the incubation unit is rotated a second rotation distance; when the incubation unit is controlled to rotate in the fixed transport sub-period of each transport cycle, in the stop period of the fixed transport sub-period, at least one regular operation capable of being performed in the fixed transport sub-period is performed; and when the incubation unit is controlled to rotate in the self-adaptive transport sub-period of each transport cycle, the incubation unit is controlled to rotate and stop at an executing station capable of performing a self-adaptive operation, and the self-adaptive operation is performed. The present invention can balance the test flux and analysis performance.