Overfishing will lead to earth's oceans ecological disaster. Overfishing not only impacts the natural balance and health of our oceans, but has also resulted in great financial loss. Meanwhile, the marine ecosystems, intertwined by food chains and thus closely influencing one another, will face the fate of depletion. This will further cause the devastation of the global ecosystem. Design of the work: the world map is presented in the form of fishing net to convey the idea that overfishing is closely related to the depletion of the global ecosystem. Accompanying net hauling is the massacre of the world’s marine ecosystems.