The utility model discloses a waste battery crushing and recycling system which is characterized by comprising at least three stages of crushing and screening groups which are connected in sequence, each crushing and screening group comprises a crushing device, a conveying device and a screening device which are connected in sequence, the conveying devices are also connected among the crushing andscreening groups, and the conveying devices are airflow conveying devices. According to the utility model, the multi-stage crushing sieves are connected in series in groups to realize step-by-step crushing and sieving, and the hammer crusher and the airflow crusher are combined, so that the crushing and separating effects can be effectively improved; air flow conveying devices are adopted among all the devices, overflowing of dust can be reduced to the maximum extent, the conveying efficiency is improved, and separation of powder and metal fragments can be further promoted in the conveying process.