The azimuth-recording system can affect the measuring precision of radar directly. To realize the auto recording about azimuth of antenna exported by various angle sensors, a multifunctional azimuth-recording system was designed. The measuring elements of angle sensor, the structural composition of multifunctional azimuth-processing unit and the working principle of north-finder, were discussed. The primary hardware of this system and the flow of data fusion were described in detail. It was proved by practical application that the accuracy of this system was sufficient for radar precision.