A communication system for underwater robot

The invention discloses a communication system for an underwater robot, and the system comprises: a collection interface module which comprises two internal communication interfaces and an external communication unit, wherein the external communication unit is used for building external communication connection; a plurality of substation modules, wherein each substation module comprises two internal communication interfaces and one or more equipment interfaces, and the equipment interfaces are used for being connected with built-in functional modules of the underwater robot. The collection interface module and the plurality of substation modules form a logic multi-node communication annular queue, and two internal communication interfaces of any node in the communication annular queue arerespectively connected with one internal communication interface of the previous node and one internal communication interface of the next node. Compared with the prior art, the communication system provided by the invention