To further investigate the applicability of fiber Bragg grating (FBG)sensors sensing technology for testing of vortex induced vibration(VIV) of deep sea risers, this paper describes laboratory tests of VIV of a model deep sea riser in a uniform current, which were carried out in a wind wave current flume. The riser model, 1.5m long and with a slenderness ratio of 83.33, was tested in conditions in which the upper 0.75 m was in air, while the lower 0.75m was exposed to a uniform current. FBG sensors were used for data acquisition and dynamic strain sensors were used for comparison. By changing the external flow velocity, the difference of the VIV process of the riser attained by two different sensors was analyzed and the vibration performance of the riser such as dominant frequency, amplitude and modal response based on frequency analysis and modal theory were researched implemented. The results indicate that requirement of FBG technology for testing of VIV of deep-sea risers can be wonderful satisfied. The vibration performance of the riser is accurately demonstrated. Modal characteristics and VIV process of the riser accompanying external flow velocity process are clearly reflected. The instantaneity and learly.