The invention provides an electronic cabin of an underwater robot, belonging to the field of underwater robots. The electronic cabin comprises a compressive cabin shell and a support skeleton in the shell. The main shell of a compressive cabin is of a cylindrical shell structure, and a circumferential reinforcing rib is arranged at the middle part of the shell to separate a power compartment and acontrol compartment, so the problem of interference of strong and weak electricity can be better avoided, the influence of heat generated by a power module in the power compartment on a control module in the control compartment during operation is reduced, and the pressure resistance of the shell is improved; a cooling fan is arranged at the middle part of the shell, so the flowing of air in theshell can be accelerated, and the purpose of rapid heat dissipation of the power module and the control module is achieved. The electronic cabin of the invention is good in pressure resistance, excellent in sealing performance, easy to disassemble and assemble, low in processing cost, high in the utilization rate of internal space of the pressure-resistant shell and superior in heat dissipation performance, can meet working requirements on the electronic cabin of the underwater robot, and is applicable to underwater robots and other related underwater carrying equipment.