Abstract: In the current market, the steel bundling device mostly adopts grip form, which has low working efficiency, and will wear the coating of steel bars, reducing its working performance, etc. Aiming at these problems, a set of circular binding clamping device for epoxy resin coated steel bar is designed in this article. In order to realize the function of automatic circular binding and clamping of the coated steel bars with low wear, the scheme of low wear and clamping into round is studied emphatically. In the low wear scheme, the double-row misaligned hexagonal roller structure is designed; while in the scheme of clamping into round, the clamp mechanism of periodic contraction is designed, and thus the packing function of coated steel bar is realized finally. According to the finite element analysis, it is verified that the key components of the device would not cause damage after bearing the maximum force. The device would effectively solve the problem of coating damage caused by friction and collision between steel bars and mechanical structures during the bundling and clamping process of coated steel bars, and reduce labor cost and realize automatic packing function.