Sumatriptan succinate was synthesized by using 4-hydrazino- N-methyl-benzenemethanesulfonamide hydrochloride and 4-N,N-dimethylamino-butanal di-Et acetal as the starting materials, via condensation, cyclization with self-made EPP as the catalyst, and salifying with succinate. The product′s structure was identified by IR, 1H-NMR and MS. The results show that the process has several advantages, such as mild reaction condition, convenient operation and easily obtained materials for com. scale-up.