The invention discloses an accumulation conveyor. The conveyor is characterized by comprising a frame, a transmission unit and a bracket trolley, wherein an annular slipway is formed on the frame by connecting a pair of linear guide slots arranged in parallel with elbow guide slots positioned on the elbows at the two ends of the frame; the transmission unit has a circular transmission structure which consists of a driving shaft and a driven shaft serving as supports; and the annular slipway is taken as a guide rail for the bracket trolley. The conveying efficiency, generality and flexibility of the accumulation conveyor can be improved, so that the conveyor can better meet the requirements of automatic production.