The invention provides a conveying and picking device and a combined harvester. The conveying and picking device comprises a driving assembly, a roller and picking toothed strips; the picking toothedstrips are fixedly arranged on the outer wall surface of the roller in the axial direction of the roller; the driving assembly is arranged in the roller and used for driving the roller to rotate in the axial direction of the roller. By adopting the scheme above, the structure is simple, reasonable and convenient to install, the process of manually picking up crops can be simulated, and the rotating speed of the roller is low. In the working process, the picking toothed strips can support the bottoms of the crops to send the crops into a machine, so that the impact on the fragile crops is small, and the fruit falling rate and loss rate of the crops in the picking process are greatly reduced. According to the provided scheme, time and strength can be saved, the working efficiency is improved, the danger of manual operation is reduced, the loss rate of sugarcane is decreased, and the sugar yield of sugarcane is increased.