The development of internal cracks in asphalt concrete can be seen as a sign of macro crack development. To explore the influence of different loading rates on the crack resistance of panel asphalt concrete, based on the theory of fracture mechanics, DIC digital image correlation technology was used as a test method for crack propagation of specimens. SCB (Semi-circular bending)tests were carried out on panel asphalt concrete with different loading rates (0.05, 0.2, 1, 3, 5,1 0 mm/min). The effects of different loading rates on the fracture index and full-field strain of asphalt concrete were analyzed. the results showed that when the loading rate increases from 0.05 mm/min to 10mm/min, the stress intensity factor ( KIC) and fracture energy ( Gf) increase, and the crack resistance index ( CRI) shows the opposite law; With the increase of loading rate, the strain (Exx, Eyy) corresponding to the peak load gradually decreases. After reaching the peak strength, with the increase of load displacement, the crack of the sample gradually expands along the edge of the coarse aggregate at a low loading rate, and the crack penetrates the coarse aggregate at a high loading rate; There are obvious differences in crack morphology of asphalt concrete specimens under different loading rates, When the loading rate is 0.05-1 mm/min, the crack morphology is tortuously rising. When the loading rate is 3-10mm/min, the crack morphology develops almost vertically upward along the pre-crack. The results of the study can provide a reference for the development of cracks and fracture behavior of panel asphalt concrete under different loading rates.