To develop novel active metal complex fuels three new types of active metal complexes were synthesized using cyanoborohydride （CBH^-） as the anion transition metal Cu（Ⅱ） as the central ion and 1-methylimidazole （1-MIM） 2-methylimidazole （2-MIM） and 4-methylimidazole （4-MIM） as ligands. Their structures were accurately characterized via infrared spectroscopy and single-crystal X-ray diffraction and the corresponding structural formulas are ［Cu（1-MIM）₄］（CBH）₂ ［Cu（2-MIM）₄］（CBH）₂ and ［Cu（4-MIM）₄］（CBH）₂ respectively. The thermal decomposition properties energy density and mechanical sensitivity of the three novel metal complexes were tested. Their theoretical specific impulse when combined with 90 % H₂O₂ oxidizer was calculated based on NASA-CEA and the hypergolic ignition performance of the novel active metal complex fuels with 90% H₂O₂ was investigated via high-speed photography. The results show that all three metal complexes exhibit high energy density （26.5~27.3 kJ·g^-1） and low sensitivity with friction sensitivity >360 N and impact sensitivity >40 J. All three complexes can undergo hypergolic reaction upon contact with 90 % H₂O₂ at room temperature and the ignition activity follows the order ［Cu（2-MIM）₄］（CBH）₂ < ［Cu（4-MIM）₄］（CBH）₂ < ［Cu（1-MIM）₄］（CBH）₂. Among them ［Cu（1-MIM）₄］（CBH）₂ has the shortest ignition delay time of 43 ms indicating that different methyl substitution positions on the ligand significantly affect the hypergolic ignition performance of the complexes with 90% H₂O₂.