A method of operating a laundry machine including a tub configured to hold wash water and a rotatable drum provided in the tub for holding laundry, the method comprising: a draining step configured to drain wash water in the tub; a spinning step after the draining step and configured to rotate the drum so as to remove water from the laundry; and a disentangling step after the spinning step and configured to disentangle the laundry in the drum, wherein the disentangling step rotates the drum and intermittently stops the rotation of the drum to cause the laundry in the drum to be dropped from an upper portion of the drum, whereby the disentangling step comprises: rotating the drum at a preset RPM that generates a centrifugal force greater than or equal to 1G in a first direction when a rotation angle of the drum is between 0 and 180 degrees with respect to the first direction; suddenly applying a brake to the drum when the rotation angle is 180 degrees or just before with respect to the first direction; characterized in that the disentangling step further comprises: resuming rotating the drum at the preset RPM in the first direction when a rotation angle of the drum is between 0 and 180 degrees with respect to the first direction and suddenly applying the brake to the drum when the rotation angle is 180 degrees or just before with respect to the first direction, wherein the step of rotating the drum, the step of suddenly applying a brake to the drum, and the step of resuming rotating the drum and suddenly applying a brake to the drum are implemented consecutively. a draining step configured to drain wash water in the tub; a spinning step after the draining step and configured to rotate the drum so as to remove water from the laundry; and a disentangling step after the spinning step and configured to disentangle the laundry in the drum, wherein the disentangling step rotates the drum and intermittently stops the rotation of the drum to cause the laundry in the drum to be dropped from an upper portion of the drum, whereby the disentangling step comprises: rotating the drum at a preset RPM that generates a centrifugal force greater than or equal to 1G in a first direction when a rotation angle of the drum is between 0 and 180 degrees with respect to the first direction; suddenly applying a brake to the drum when the rotation angle is 180 degrees or just before with respect to the first direction; characterized in that the disentangling step further comprises: resuming rotating the drum at the preset RPM in the first direction when a rotation angle of the drum is between 0 and 180 degrees with respect to the first direction and suddenly applying the brake to the drum when the rotation angle is 180 degrees or just before with respect to the first direction, wherein the step of rotating the drum, the step of suddenly applying a brake to the drum, and the step of resuming rotating the drum and suddenly applying a brake to the drum are implemented consecutively. rotating the drum at a preset RPM that generates a centrifugal force greater than or equal to 1G in a first direction when a rotation angle of the drum is between 0 and 180 degrees with respect to the first direction; suddenly applying a brake to the drum when the rotation angle is 180 degrees or just before with respect to the first direction; characterized in that the disentangling step further comprises: resuming rotating the drum at the preset RPM in the first direction when a rotation angle of the drum is between 0 and 180 degrees with respect to the first direction and suddenly applying the brake to the drum when the rotation angle is 180 degrees or just before with respect to the first direction, wherein the step of rotating the drum, the step of suddenly applying a brake to the drum, and the step of resuming rotating the drum and suddenly applying a brake to the drum are implemented consecutively.