Disclosed is a control method of a laundry machine. The control method of a laundry machine included with a balancer for performing a balancing step at least three times in a spinning cycle, the control method comprising a step configured to balance the drum at least one time before and while a rotation speed of the drum passes a transient region, a step configured to determine an irregular vibration region of the laundry machine and a balancing step implemented at least one time before a rotation speed of a drum enters the irregular vibration region, while the rotation speed is passing the irregular vibration region and after the rotation speed passes the irregular vibration region.