A 3-D entity model of aero-engine holistic bladed disk is established and the natural model of vibration is analysed to the coupling vibration characteristics. According to the calculations of the FEA software of ANSYS, we get the resonance speed Campbell figure of the blade, analyse the basic characteristics of structure model vibration and get the pitch-frequency figure of holistic bladed disk. The results supply the reliable assurance for further studies on the structure optimization design and avoidance of resonating of the bladed disk.