A laser beam delivery control system has been designed to align a laser beam axis and monitor its beam properties such as beam position, beam diameter, power, peak power and 3-D profile. A laser machining system for long term operation will make this system necessary because those beam qualities will be changed. The developed system is composed of two beam sensors, two angle control bending mirrors with actuators, and a host controller. A rotating wire method was applied for this sensor. In this system, the accuracy of the beam diameter was ±0.5 mm compared with the measurement from a burn pattern of acrylic resin. A far-field laser beam position of 17 m away from an oscillator could have been measured and controlled automatically within an accuracy of ±1 mm under on-line conditions. Thus this developed system is very promising for evaluating beam qualities.