Built with a magnet beacon sub, a magnetic signal acquisition unit, a magnetic sensor probe and a set of professional analysis software, SmartMag target-hitting guidance system interprets the geometry position correlation between the drilling bit and the sensor set in the target borehole and finally guides the drilling reaching or avoiding the target area. The paper introduced industrial test trial on SmartMag targethitting guidance system. Based on the earlier researches, the successful operation results have been achieved during the practical test trial of the system.