The invention discloses an intelligent modular fish and vegetable co-existing system. The intelligent modular fish and vegetable co-existing system comprises an upper part and a lower part, wherein vegetables are grown on the upper part, fish is farmed on the lower part, the upper part and the lower part are separated through a partition wall, the top of the upper part is provided with a camera, aliquid atomizer and fill-in lights, a food provisioning device is arranged under the partition wall, the lower portion of the lower part is provided with a wave making machine, an oxygenator and a heater, the bottom of the lower part is provided with a drainage port, the side wall of the lower part is provided with a water inlet and a power supply port, the lower part is further provided with a controller, a water body is internally provided with a sensor and a pump, and the pump is connected with the liquid atomizer through a pipeline. The intelligent modular fish and vegetable co-existing system has the advantages that through the modular design, the use is more flexible, the sizes of planting and cultivation areas can be both freely customized through multi-module integration, and crops of planting and cultivation and types of fish can also be freely customized, thereby fully satisfying different areas, different sizes and different users of different demands; single module can produced in batch, the cost is lower, and the efficiency is higher.