The invention relates to an artificial shallow sea ecosystem marine ranch. The marine ranch is an ecological bionic project artificially imitating a natural upwelling fishery and a shallow continental shelf ecosystem fishery. With an artificially induced upwelling marine ranch device, nutrient-salt-rich deep sea water is induced to lift to a euphotic zone. Nutrient salt sinking is prevented with an artificial hallow continental shelf ecosystem marine ranch device. A huge well-conditioned place is provided for the growth, reproduction, spawning, feeding, hiding, inhabitation and activity of various marine lives. Coordination and cooperation of light, heat, water, fertilizer, bait, oxygen and space resources are realized. Solar energy is absorbed and converted into biomass energy; carbon dioxide is absorbed and reduced into phytoplankton; and through the marine ecosystem food chain and food web, phytoplankton is converted into zooplankton and economic animals such as fish, shrimp, crab, shell, sea cucumber, squid and the like. After catching and processing, seafood such as fish meat, fishmeal and fish oil can be produced. The seafood fish meat can be adopted as a food; the fishmeal can be adopted as a feed; and the fish oil can be processed into food or into biodiesel as an energy. With the marine ranch, in the sea euphotic zone, solar energy is converted into food and energy.