The bending stress of main cable near saddles in the super long-span suspension was tested by means of the strain gages and the vibrating wires sensors. Testing results show that the max bending strain of main cable near saddles was 60×10-6~80×10-6 and corresponding bending stress was 11.7~15.6 MPa when a piece of steel box girder was craned. This bending strain included the geometry non-linear distortion of main cable.