To provide a liquid ejecting apparatus which can improve a recording quality of recording matter while suppressing consumption of a second liquid in a constitution of ejecting a first liquid for forming a pattern to an ejection object and the second liquid reactive to the first liquid, and to provide a method for controlling a liquid ejecting apparatus.

A pre-dot group is formed beforehand by ejecting a reaction liquid using a second ejection drive pulse to a striking-scheduled region of ink in a recording medium. Thereafter, a pattern dot is formed by ejecting the ink using a first ejection drive pulse to the striking-scheduled region formed with the pre-dot group. A total length in a relative movement direction of the pre-dot group is longer than a total length in the relative movement direction of the pattern dot.