The invention relates to a synthesis method of aromatic diamine containing double imidazole rings. The synthesis method comprise the following steps: (1) carrying out condensation-cyclization-dehydration one pot process on 4-nitro-1,2-phenylenediamine and aromatic acyl chloride which are utilized as raw materials so as to synthesize an aromatic dinitro-compound containing double imidazole rings; and (2) carrying out hydrazine hydrate reduction on the aromatic dinitro-compound containing double imidazole rings in the presence of a catalyst so as to form the aromatic diamine containing double imidazole rings. The synthesis method has the advantages of high production efficiency, short synthesis route and simple preparation process.