Abstract: The design of beam-controller of airbone active phase array radar is introduced in this paper.Except to ensure beam conversion speed required by the system,miniaturized design is needed yet.Therefore ,miniaturization and high speed,high reliability and agility is key techniques for this kind of radar.The coordinate origin is set in center of two dimension plane during phase calculation,then share out two dimension plane into four blocks,each block is defined to one quadrant,four modules with same hardware are adopted to contruct of the full hardware and programmable beam-controller. The beamcontroller adopts flash memorizer with great capability,Then,the on-line programming for the initial phase and amplitude of the antenna system can be carried out.The near field test for the antenna array and the outfield test for whole radar system are finished.The target in the airport can be observed.