Benefiting from its bent molecular structure,3,6-pyridazinyl contained tetracationic cyclophane(1) is synthesized by template-directed method with high isolated yield up to 92%.This template-directed strategy is further utilized to efficiently construct [2]rotaxane. Benefit from its bent molecular structure, 3,6-pyridazinyl contained tetracationic cyclophane (1) is synthesized by template-directed method with high yield yield up to 92%. This template-directed strategy is further advantageously to construct [2] rotaxane.