A method for controlling an injector of a vehicle may include: a step of determining, by a controller, a targeted opening time and a targeted closing time for at least one injector according to a current driving condition; a step of measuring, by the controller, an closing time of the injector controlled depending on the targeted closing time; and after the measuring step, a step of determining, by the controller, a deviation of the closing time with respect to the targeted closing time and determining a learning closing time obtained by reflecting the deviation to the targeted closing time to store a corresponding driving condition, in which in the determining step, when there is the learning closing time stored for the current driving condition, the targeted closing time is configured to be determined by reflecting the learning closing time.