测量了有机超导体κ（ＢＥＤＴＴＴＦ）２Ｃｕ（ＳＣＮ）２单晶的Ｘ射线衍射和强磁场下磁阻．样品沿垂直于传导面的晶格常数为１．４９ｎｍ．在１．２Ｋ温度，磁场垂直于传导面的位形下，在６Ｔ以上观测到磁阻振荡，即ＳｈｕｂｎｉｋｏｖｄｅＨａｓ效应．由ＦＦＴ（ＦａｓｔＦｏｕｉｅｒＴｒａｎｓｆｏｒｍａｔｉｏｎ）谱图，我们发现了对应于κ（ＢＥＤＴＴＴＦ）２Ｃｕ（ＳＣＮ）２单晶Ｆｅｒｍｉ面闭合轨道Ｆα频率和开放轨道磁突破频率Ｆβ的存在，Ｆα＝６２０±３０Ｔ，Ｆβ＝４１００±２００Ｔ． X-ray diffraction and magnetic reluctance in a strong magnetic field of the organic superconductor κ (BEDT-TTF) 2Cu (SCN) 2 single crystal were measured. The sample has a lattice constant of 1.49 nm along the normal to the conducting surface. At a temperature of 1.2K, the magnetic field oscillates perpendicularly to the plane of the conduction plane at 6T above, and the Shubnikov-deHas effect is observed. From FFT (FastFouierTransformation) spectra, we found that the Fα frequency corresponding to the closed orbital Fα of the Fermi surface of single crystal of κBEDTTTF 2Cu (SCN) 2 and the open circuit magnetic breakthrough frequency Fβ, Fα = 620 ± 30T, Fβ = 4100 ± 200T.