A new high-nitrogen compound zinc 5, 5′-azotetrazolate(ZnATZ) was synthesized by mixing the solution of Zn²⁺ and sodium 5, 5′-azotetrazolate(NaATZ), which was prepared via alkaline oxidation reaction using 5-aminotetrazole as a staring materials. The optimal conditions obtained by orthogonal experiments were reaction temperature, 65 ℃; concentration of NaATZ, 0.2 mol·L^-1; concentration of Zn²⁺, 0.5 mol·L^-1; NaATZ/zinc salt (mole ratio), 1:1.5. The structure was characterized by IR and elemental analysis and then the molecular formula C₂N₁₀Zn·2H₂O was confirmed. The results of TG and DSC show that, the initial decomposition temperature of ZnATZ is 192 ℃, the peak temperature is 219 ℃ and the thermal stability of ZnATZ is good. The results of sensitivity show that ZnATZ is sensitive to flame and impact, having important characteristics for ignition or percussion composition.