The preparation method of a funnel like ligand derived from calix[6]arene and tris(2-pyridyl-methyl)anime has been improved.The Cu(Ⅱ)complex was obtained and characterized by ESI-MS,EPR,UV-Vis spectra and crystallographic analysis.In the complex,a guest acetonitrile molecule is introduced into the cavity of the ligand host via the coordination with Cu(Ⅱ)center.