The invention provides a prefabricated concrete tower barrel connecting part. The prefabricated concrete tower barrel connecting part comprises an L-shaped ribbed steel bar, a threaded sleeve and a straight-end ribbed steel bar; the L-shaped ribbed steel bar and the threaded sleeve are in cold extruding connection, and the threaded sleeve and the straight-end ribbed steel bar are in threaded connection. According to the prefabricated concrete tower barrel connecting part, the production technology can be simplified, the production machining cost is lowered, through raw material rolling and quenching and tempering treatment, the fatigue performance of the connecting part is improved, and the bottleneck that the fatigue performance of a common ribbed steel bar is only 50% of the design lifeis overcome.