The static and dynamic flexural-tensile properties of fully-graded concrete are important for the seismic safety design of high arch dams. In this paper, the static and dynamic flexural-tensile properties of fully-graded concrete of high arch dam were studied through tests. The fully-graded concrete was loaded by electro-hydraulic servo device. In the static test, the loading rate was 250N/s. In the dynamic test, earthquake was simulated by repeating loading of triangle wave with fluctuating amplitude and 1Hz frequency. Some results were achieved from these tests. Compared with the static test, the flexural strength, initial Young's modulus and cracking strain were increased in dynamic test. The phenomena in the tests showed that the concrete wasn't destroyed immediately after it was cracked. The measured crack load was about 90% of the failure load. Besides, the fracture of large-size aggregates on fracture surface of specimens were also observed obviously. These results from the tests provide effective references for the seismic safety evaluation of structures such as high arch dam.