Ten unsaturated alkylamides were isolated from the pericarps of Zanthoxylum bungeanum. Three of them identified as (2E, 4E)-2'-hydroxy-N-isobutyl-2,4-tetradecadienamide (named tetrahydrobungeanool), (2E,4E, 8Z)-2'-hydroxy-N-isobutyl-2,4,8-tetradecatrienamide (named dihydrobungeanool) and (2E,4E, 8Z, 10E, 12E)-l'-isopropenyl-N-(2'-bisobutenyl)-2,4,8,10,12-tetradecapentaenamide (named dehydro-7-sanshool), are novel compounds. The content of each compound in crude drugs was determined by HPLC.