The utility model provides a concrete creep testing device to solve the problems of excessively high cost, relatively large occupied area, complex operation, poor loading stability and the like of an existing concrete creep testing device. A loading base and a set of two-stage lever are formed through three steel beams, and the two-stage lever comprises the first-stage lever steel beam and the second-stage lever steel beam. The concrete creep testing device has the benefits that due to the two-stage lever loading structure, the lever loading efficiency of a creep test is greatly improved compared with a current commonly used single-stage lever test device, meanwhile, the loading length of the lever is reduced, the volume of a balancing weight, the area of a test field and the requirement on installing hoisting equipment are also reduced, and the construction of a large-volume concrete base test platform is further saved.