The invention discloses a conveying pipeline of a pneumatic injection pump, comprising an outer pipe, a head connection section and a tail connection part. An inner wall of the outer pipe is provided with an inner lining layer; the inner lining layer is provided with more than six wearable bars along the length direction of the outer pipe, each wearable bar consists of a rectangular wearable bar body integrated with the inner lining layer and a plurality of bulges on the inner wall of the wearable bar; gaps are arranged between every two wearable bars. The conveying pipeline of the pneumatic injection pump adopts the structure, so that when the pneumatic injection pump pumps blocky and particle materials, the conveying pipelines are not easily abraded, the service life of the conveying pipeline is prolonged, the conveying pipeline is unnecessary to change frequently, and the maintenance fees is reduced.