A control method of a washing machine, wherein the washing machine comprises: three hollow balancers provided at an inner circumferential surface (2a1) of a washing tub, wherein the balancers are provided at equal angle intervals along the inner circumferential surface (2a1) of the washing tub; and a water injection device for injecting adjusted water into each of the balancers individually, wherein the control method of the washing machine comprises, in a dehydration process: an unbalanced position detection step for detecting an unbalanced position of the washing tub; a balancer selection step for determining the balancers that require for water injection based on the unbalanced position detection step; and in response to determining in the above balancer selection step that water injection is required for two of the three balancers: a first water injection step for injecting the adjusted water into an arbitrary first balancer in the two balancers, wherein the first balancer is a balancer that is located at a position having a furthest distance from the unbalanced position; an unbalance amount detection step for detecting a transition of the unbalance amount of the washing tub during the first water injection step; a water injection switching step for switching the water injection of the adjusted water from the first balancer to a second balancer when the unbalance amount detected by the unbalance amount detection step turns into an increase, wherein the second balancer is a balancer that is located at a position having a second furthest distance from the unbalanced position; and a second water injection step for injecting the adjusted water into the second balancer. three hollow balancers provided at an inner circumferential surface (2a1) of a washing tub, wherein the balancers are provided at equal angle intervals along the inner circumferential surface (2a1) of the washing tub; and a water injection device for injecting adjusted water into each of the balancers individually, an unbalanced position detection step for detecting an unbalanced position of the washing tub; a balancer selection step for determining the balancers that require for water injection based on the unbalanced position detection step; and in response to determining in the above balancer selection step that water injection is required for two of the three balancers: a first water injection step for injecting the adjusted water into an arbitrary first balancer in the two balancers, wherein the first balancer is a balancer that is located at a position having a furthest distance from the unbalanced position; an unbalance amount detection step for detecting a transition of the unbalance amount of the washing tub during the first water injection step; a water injection switching step for switching the water injection of the adjusted water from the first balancer to a second balancer when the unbalance amount detected by the unbalance amount detection step turns into an increase, wherein the second balancer is a balancer that is located at a position having a second furthest distance from the unbalanced position; and a second water injection step for injecting the adjusted water into the second balancer. a first water injection step for injecting the adjusted water into an arbitrary first balancer in the two balancers, wherein the first balancer is a balancer that is located at a position having a furthest distance from the unbalanced position; an unbalance amount detection step for detecting a transition of the unbalance amount of the washing tub during the first water injection step; a water injection switching step for switching the water injection of the adjusted water from the first balancer to a second balancer when the unbalance amount detected by the unbalance amount detection step turns into an increase, wherein the second balancer is a balancer that is located at a position having a second furthest distance from the unbalanced position; and a second water injection step for injecting the adjusted water into the second balancer.