The invention discloses a ton-bag ore sampling and screening system. The ton-bag ore sampling and screening system comprises a bag breaking bin, wherein a first-stage cloth feeding machine is connected to the lower end of the bag breaking bin, a plurality of multistage linear vibrating screens are arranged at the lower end of the primary cloth feeding machine, a weighing hopper is arranged on thelower side of the multistage linear vibrating screen, and a packaging feeding machine is arranged on the lower side of the weighing hopper. According to the ton-bag ore sampling and screening system,the old manual weighing, sampling and screening processes can be replaced, the timeliness and authenticity of commodity inspection are greatly solved, old and old people are operated, and single-person automatic operation is improved; and the time consumption of 1 to 3 hours per bag on average is increased to the effect of 6 to 10 minutes per bag, the time is saved, and the number of batch sampling samples is increased. Automatic monitoring of the whole system can be achieved, human intervention is avoided, and the justice and fairness of commodity trade settlement can be improved. The materials are substantially separated from operators, so that the harm of the dust to the human bodies is reduced.