Abstarct: In this study excessive vibration of the axially moving beam was investigated. The axial speed of the beam causes the transvers amplitude of the structure to be excessive larger. The theory of nonlinear target energy transfer was applied to suppress the excessive vibration of axially moving beam by using an essentially nonlinear attachment, which is called a nonlinear energy sink. Studies shows that using a nonlinear energy sink could effectively suppress the vibration. So, in this study two separeted parallel nonlinear energy sinks were attached to a beam and the effects of this combination on the absorption and vibration of the system was investigated. The equations of motion were derived from Hamilton’s principle and then, using numerical methods, frequency response of the system was obtained for primary resonance and superharmonic resonance cases. Finally, the effect of different parameters of nonlinear energy sinks on frequency response of the system were investigated.