Abstract: Fracture tests were carried out on non-standard three-point bending self-compacting concrete(SCC) beams with different initial crack-depth ratios under different loading rates. The fracture parameters such as load-crack mouth opening displacement curve, peak load, fracture toughness, critical crack-depth ratio increment, elastic modulus and flexibility coefficient were obtained. Based on Pearson correlation test formula and loading rate effect model, the correlation between initial crack-depth ratio, loading rate and fracture parameters and the loading rate effect of SCC fracture parameters were quantitatively analyzed. The results show that the peak load, fracture toughness and elastic modulus all have loading rate effect in a certain extent. The flexibility coefficient is only related to the initial crack-depth ratio. The elastic modulus and fracture toughness are inherent properties of the material and are not affected by the initial crack-depth ratio. Meanwhile, the damage and fracture process, fracture boundary effect and crack propagation pattern of the SCC were analyzed based on acoustic emission(AE) technology. The results show that the AE parameters can well reflect the three-stage characteristics and boundary effect of concrete fracture. The propagation of crack is mainly tensile crack at first, and the proportion of shear crack increases with the fracture propagation process.