The utility model discloses a can improve production efficiency's concrete production line, including feed bin and transmission flat belt, the feed bin has more than two, and arranges in proper orderand set up on the transmission flat belt, still includes the oblique belt of transmission, and the oblique belt of transmission is close to transmission flat belt ejection of compact department setting, and the feeding part of the oblique belt of transmission is located the below of transmission flat belt, also be provided with the feed bin on the conveying zone face of the oblique belt of transmission, the beneficial effects of the utility model are that: through the direct feed bin that sets up on the oblique belt of transmission to avoid the feed bin to go wrong and shut down when examiningand repairing, influence the efficiency of this production line production, and the oblique belt of transmission that the slope set up can be carried the material to the mixer in, and can through weighing device then can be accurate weigh the concrete aggregate quantity of output.