The new compound was prepared by the reaction of Cd(ClO4)2·6H2O,1,10 phenanthroline (phen)and picric acid (HPA)(ratio 1∶3∶2) in methanol aqueous solution refluxing for 4 hours. The crystals used for X ray analysis was obtained by slow evaporation of the solution at room temperature. The crystal compound is in triclinic with space group with a=1.1363(4)nm,b=1.2593(2)nm,c=1.3972(4)nm,α=93.97(2)?,β=100.84(3)?,γ=106.29(2)?,Z=2,V=1.8690(9)nm3,Dc=1.715g·cm-3, μ(MoKα)=0.677mm-1,F(000)=972,R=0.0907,wR=0.2240. In the complex, the Cd? cation is octahedrally coordinated to two 1,10 phenanthroline ligands and two water molecules incis disposition. As outer sphere, picrate anions are combined with inner by hydrogen bond and static electricity interaction.