At present,the traditional manual radiography is mainly used to make the weld seam digital ray detection of the bottom/barrel section of launch vehicle storage tank,which has some problems such as low detection efficiency,strong dependence on subjective experience and poor quality stability.In order to realize the efficient digital ray detection of the weld seam of the bottom/〖JP2〗barrel section of launch vehicle storage tank and meet the needs of rapid and batch development of 〖JP3〗it under the situation of normalized high-〖JP〗density launch,a digital ray detection and control system for the weld seam of the bottom/barrel section of the carrier rocket tank based on the cooperation of two robots was developed.The control system mainly completed the functions of cooperative movement of two robots,remote control start,servo motor drive,automatic positioning and data communication in the upper computer.The experimental results show that the developed digital detection control system can compatible with various types of box bottom and barrel section detection with high detection efficiency and high precision.