3, 3′-Bis(tetrazol-5-yl)difurazanyl ether was designed and synthesized with a yield of 46.7% from 3-amino-4-cyano furazan through oxidation, ertherification and cyclization, and was characterized by ¹³C NMR, IR, MS and elemental analysis. In addition, the mechanism of cyclization promoted by Zn²⁺ was proposed and discussed, and the reaction conditions of cyclization were optimized as follows: time is 4 h, ZnCl₂·2H₂O as catlyst, molar ratio of ZnCl₂·2H₂O to FOF-2 is 1:1.