Novel processing production line for discharging high-quality aggregate together with gravel

The invention discloses a novel sand-gravel simultaneous-output high-quality aggregate processing production line which comprises a crushing mechanism and is characterized in that the crushing mechanism comprises a box body, two transverse rollers and two longitudinal rollers are rotationally connected in the box body, one ends of the two transverse rollers rotationally penetrate through the box body and are in transmission connection through a first gear set, and the other ends of the two longitudinal rollers are in transmission connection through a second gear set; one ends of the two longitudinal rollers rotationally penetrate through the box body and are in transmission connection through a second gear set, a feeding hopper is fixedly connected to an opening of the box body, a screening groove is formed in the lower side of the front end of the box body, a discharging opening of the box body communicates with the screening groove, and a rotating shaft is arranged outside the box body; the rotating shaft i