To search green， low-toxicity lead-free primary explosive， a new tetrazole derivative ligand 1H-5-acylhydrazide tetrazole （TZCA） and its complex Ni（TZCA）₂（ClO₄）₂ （ECCs-1） were synthesized by hydrazinolysis and coordination reactions using ethyl 1H-tetrazole-5-carboxylate as the raw material. The molecular structure and thermal decomposition properties of the title complex were tested by X-ray single crystal diffraction， IR diffraction， NMR， elemental analysis， thermogravimetric and simultaneous thermal analyzers. The heat of combustion of ECCs-1 was tested by oxygen bomb calorimetry and its energy parameters were predicted based on Hess law and K-J equation. Sensitivities of ECCs-1 were tested by BAM test methods. The results show that the density of TZCA is 1.83 g·cm^-3， monoclinic crystal system， C2/c space group， the stacking mode is V-staggered stacking. The density of ECCs-1 powder is 1.90 g·cm^-3， impact sensitivity is 17 J， friction sensitivity is 72 N， thermal decomposition temperature is 336 ℃， activation energy of the thermal decomposition reaction is 183.3 kJ·mol^-1， thermal explosion critical temperature is 309.8 ℃， activation entropy is 46.745 J·K^-1·mol^-1， and the activation enthalpy is 178.563 kJ·mol^-1. The hot baking and lead plate tests both show that ECCs-1 has a good detonation performance.