The dynamic properties of the circular tube VE dampers are tested under different environment temperature, excitation frequencies and shear strain amplitudes. The test results show that the circular tube VE dampers have stable properties and excellent capacity for energy dissipation，which can be used in the vibration control of engineering structure under earthquake or wind loads. When VE dampers are applied to the wind-induced vibration control of buildings, the number of loading cycles must be taken into account in the design, for internal temperature increasing of viscoelastic material. Based on the test results, the effect of the number of hysteretic loops on the mechanical properties of the circular tube VE damper is studied. The dynamic property tests of the aged circular tube VE dampers are also introduced in this paper, and the conclusion is drawn that the circular tube VE damper has good aging property. Meanwhile, the fatigue test of the circular tube VE dampers is performed. The test results indicate that the circular tube VE dampers have good fatigue properties under earthquake action or wind load. Combined with the engineering structure using circular tube viscoelastic dampers, the energy-dissipated design and main calculating result are illustrated. The calculated result shows that circular tube viscoelastic damper can significantly reduce the displacement response and acceleration of cantilevered structure.