The plane wave expansion method (PWE) is adopted to calculate chalcogenide photonic crystal bandgap, and finite difference time domain (FDTD) method is used to simulate transmission characteristics for 60° bent chalcogenide photonic crystal waveguide. Two symmetric air-holes are introduced in outer edge of line defects in the 60° bent region, in order to improve the transmission efficiency by adjusting the radii of the air-holes. The simulation result shows that transmission bandwidth is widened from the initial 60 nm to 161 nm while the radius of the air-holes is 0.54R, however, the transmission efficiency fluctuates violently. Then some more air-holes are introduced in the central line defect in bent region. It is noticed that when 3 air-holes with radius of 0.48R are added, not only the transmission efficiency is improvement, but also the transmission bandwidth is widened to 340 nm. Continuous bend of 60° waveguide structure optimization is similar to that of single one, and the result shows that the transmission efficiency in continuous bend of waveguide can be significantly improved.