A new Ca(II) complex material has been prepared and characterized by elemental analysis, IR and single-crystal X-ray diffraction. The results showed that the compound the calcium ion lies in seven-coordinated environments, belonging to monocapped trigonal prism geometry. The complex formed one dimensional chain structure through intramolecule and intermolecule hydrogen bonds and π-π stacking interaction. The antibacterial assay of the Ca(Ⅱ) complex was tested using a modified version of the 2-fold serial dilution method. The results show that the complex shows considerable antibacterial activity against escherichia coli, bacillus subtilis and staphylococcus white.