Detection efficiency mid Detection precision for 2 LLS in Guangdong province, China is analyzed comprehensively based on Ihe he close Optical-Electrical observation of Rocket-triggered lightning. The results show that the normalized space location error of ground-triggered strokes was 760 meters, 2790 meters for LLS2, lightning current amplitude are normalized to be 14% for LLS1 and 31% for LLS2.This paper also discuss the necessity of introduction of robust estimation in the lightning location computation to exclude the gross errors which may increase with the detection stations number.