Based on the large-scale triaxial compression test and creep test of coarse aggregates under freezing and thawing environment, the deformation and creep characteristics of coarse aggregates under different freezing-thawing cycles, confining pressures and stress levels are studied. The test results show that the stress-strain relationship of unfrozen coarse-grained materials is a strain hardening curve, and the coarse-grained materials show dilatancy in the shear process within the confining pressure range of 100-600.kPa. Under the influence of freeze-thaw cycle, the initial elastic modulus and failure stress both show a downward trend. When the confining pressure is 200.kPa, the initial elastic modulus decreases by 20% and the failure stress decreases by 37%. When the confining pressure is 600.kPa, the initial elastic modulus decreases by 5% and the failure stress decreases by 25%. The deformation of coarse-grained materials under freeze-thaw cycles develops into a decay-type creep with time. Meanwhile, the axial creep strain gradually increases with the increase of the number of freeze-thaw cycles and the stress level. The axial creep strain obviously increases after 8 freeze-thaw cycles and the creep time curve of coarse aggregates under the influence of stress level can be expressed in the form of exponential function.