A method for driving laundry to roll in an upright tub with at least three pulsators forming rolling surfaces for the laundry, the method characterized by: - at least two laundry rolling surfaces for the laundry, alternately and not simultaneously formed to provide a mechanical force for washing laundry, the at least two rolling faces having a predetermined angle there between, the laundry being rolled more than once on one of the rolling faces and then being rolled more than once on another rolling face; - wherein one of the at least two rolling faces is formed by rotating and driving laundry by a pair of pulsators (6, 8) which are adjacent and obliquely provided; the at least one rib on the pulsators lifting the laundry and making laundry fall in a nearly continuous laundry stream manner and then re-lifting laundry; this process repeating itself at least three times; - wherein another rolling face of the at least two rolling faces alternately and not simultaneously formed by rotating and driving the laundry by another pair of pulsators (7, 8) which are adjacent and obliquely provided; the at least one rib on the pulsators lifting laundry and making laundry fall in a nearly continuous laundry stream manner and then re-lifting laundry; this process repeating itself at least three times; wherein the number of rollings on the different rolling faces may be same or may not be same; the rolling process repeating itself for a predetermined number of times; - causing one of the one pair of pulsators (6, 8; 7, 8) and the other pulsators to rotate in the same direction so as to provide a side auxiliary force during the rolling processes with at least one of the pulsators having at least one rib. - at least two laundry rolling surfaces for the laundry, alternately and not simultaneously formed to provide a mechanical force for washing laundry, the at least two rolling faces having a predetermined angle there between, the laundry being rolled more than once on one of the rolling faces and then being rolled more than once on another rolling face; - wherein one of the at least two rolling faces is formed by rotating and driving laundry by a pair of pulsators (6, 8) which are adjacent and obliquely provided; the at least one rib on the pulsators lifting the laundry and making laundry fall in a nearly continuous laundry stream manner and then re-lifting laundry; this process repeating itself at least three times; - wherein another rolling face of the at least two rolling faces alternately and not simultaneously formed by rotating and driving the laundry by another pair of pulsators (7, 8) which are adjacent and obliquely provided; the at least one rib on the pulsators lifting laundry and making laundry fall in a nearly continuous laundry stream manner and then re-lifting laundry; this process repeating itself at least three times; wherein the number of rollings on the different rolling faces may be same or may not be same; the rolling process repeating itself for a predetermined number of times; - causing one of the one pair of pulsators (6, 8; 7, 8) and the other pulsators to rotate in the same direction so as to provide a side auxiliary force during the rolling processes with at least one of the pulsators having at least one rib.