The invention discloses a mixing device facilitating discharging for concrete processing. The mixing device comprises a stirring tank, a driving mechanism is arranged at the top of the stirring tank,feeding channels are symmetrically formed in the positions, located on the two sides of the driving mechanism, of the top of the stirring tank, a discharging channel is formed in the bottom of the stirring tank, and a discharging mechanism is arranged in the discharging channel. According to the mixing device, through arranging the driving mechanism, when a motor rotates, a first gear is meshed with a second gear, so that a first rotating shaft rotates, a first bevel gear is meshed with a second bevel gear, a third rotating shaft rotates, and a guide rod is matched, so that a concrete raw material is smoothly guided into the stirring tank; and through arranging the discharging mechanism, a first annunciator and a second annunciator, quantitative discharging of the mixing device is achieved, the situation that concrete overflows out of a hopper due to misoperation of workers is avoided, resources are saved, and the working intensity of the workers is reduced.