The invention discloses an assembly line resonator automatic detection and screening device which comprises a conveying line and a vibrating disc. The conveying line comprises a base plate, a first side plate and a second side plate, the first side plate and the second side plate are matched with the base plate to form a conveying channel; a notch is formed in the end, close to the vibrating disc,of the base plate, and an overturning plate which can achieve automatic overturning to control opening/closing of the notch is arranged at the notch; a first movable plate is arranged at the end, close to the vibrating disc, of the first side plate and located on one side of the notch, and a second movable plate opposite to the first movable plate is arranged at the end, close to the vibrating disc, of the second side plate; the sides, far away from each other, of the first movable plate and the second movable plate are provided with compression springs, when the compression springs are in the natural state, the sides, getting close to each other, of the first movable plate and the second movable plate and the side wall of the conveying channel are located in one plane, and the notch is in the opening state when the compression values of the compression springs reach the preset values. By means of the assembly line resonator automatic detection and screening device, assembly line detection and screening work of a resonator can be achieved.