The bending performances of different ordinary concretes and rubberized concrete by AE technology were investigated. Acoustic emission signals were also collected to analyze the damage process under bending test. The rupturing strength of rubberized concrete was found to be greater than that of the ordinary concrete with the same compressive strength. The AE result shows that the activity of AE signals is weaker for higher strength ordinary concrete, but the intensity is higher. It is also found that both the activity and the intensity of rubberized concrete are lower than the ordinary concrete, which demonstrates that the damage degree in rubberized concrete is lighter than in the ordinary concrete under static bending load, and this may account for the higher bending strength of rubberized concrete. The results of AE location analysis corresponds well with the actual damage area observed during the test.