Abstract: An ecological management method and system for tropical marine ranching, a device, and a medium are provided, which relates to fishery resource management technologies. The method includes: obtaining ecological environment data and energy flow analysis data of a target marine ranching; performing ecological evaluation on the ecological environment data to determine an ecological comprehensive evaluation result, the ecological comprehensive evaluation result includes a health condition evaluation and an ecosystem stability evaluation of the tropical marine ranching; performing, based on the energy flow analysis data and the ecological comprehensive evaluation result, bio-capacity evaluation by using an Ecopath energy flow model to obtain a current bio-capacity; and performing ecological management and developing an ecological management strategy based on the current bio-capacity, the ecological management strategy includes an enhancement and releasing scheme and a fishing scheme.