Since the 21st century, the exploration and development of marine resources has become a new hot field. With the rapid development of artificial intelligence technology, the combination of AI technology and marine development has become an inevitable trend. As a pioneer in marine exploration and protection, underwater robots have been studied in China since 1985 and have successfully carried out underwater experiments. With the continuous progress of technology and the promotion of application, the application of intelligent underwater vehicles in the exploration of marine resources in China is becoming more and more extensive. For example, in 2010, China's "Deep Sea Warrior" underwater robot successfully discovered a large number of metal sulfide deposits in the South China Sea, which indicates that China has become one of the leaders in the field of global exploration and exploration. In view of the harsh underwater environment, the depth of human diving can not meet the technical needs, so it is urgent for underwater robots to complete underwater development. The underwater robot is operated by the staff of the mother ship through cables, and is detected by special equipment such as underwater video screen and sonar. In addition, the underwater operation can be completed by installing a manipulator module. China has also invested a lot of money and manpower to promote the innovation of deep-sea exploration technology, such as autonomous submersible, acoustic positioning, three-dimensional imaging and so on. In the future, with the continuous improvement of technology and the expansion of application scenarios, China's intelligent underwater vehicles will continue to play an increasingly important role in the exploration of marine resources. This work designs an intelligent underwater detection and evaluation integrated robot, which adopts a modular design scheme and consists of four parts: power system, support system, control system and perception system. Based on the modular function, the robot can realize various functions such as underwater grasping, underwater survey and data acquisition, so as to replace human beings to complete underwater survey tasks in high-risk areas. The underwater robot industry is booming. At present, imported robots occupy a large number of my country's underwater robot market, and domestic operating robots with higher performance and higher cost performance challenge imported robots, breaking the monopoly of foreign countries in this industry, and localized equipment has more advantages in seizing the market. The underwater robot designed in this work will play a role in many fields such as port inspection, ship maintenance, submarine pipeline inspection, marine research, etc., and will surely emerge in the future intelligent underwater robot market.