System for polyculturing soft-shelled turtle in different position in same river crab ripe crab culturing pond

The invention relates to a system for polyculturing soft-shelled turtle in a different position in the same river crab ripe crab culturing pond. The system comprises a river crab culturing area for river crab culture and a soft-shelled turtle culturing area for soft-shelled turtle culturing, wherein water in the river crab culturing area and the soft-shelled turtle culturing area can flow through; the river crab culturing area and the soft-shelled turtle culturing area can be separated via a blocking net; and a plurality of wild fish trapping devices alluring wild fishes in the river crab culturing area to the soft-shelled turtle culturing area are installed on the block net. The river crab culturing area and the soft-shelled turtle culturing area can be separated via the blocking net; the plurality of wild fish trapping devices alluring wild fishes in the river crab culturing area to the soft-shelled turtle culturing area are installed on the block net; wild fishes fighting for fodder against the crabs can be effectively controlled by the soft-shelled turtle and no damages are caused to river crabs; fodder cost can be reduced and river crab survival rate can be improved; vitality of the soft-shelled turtle is close to the vitality of wild soft-shelled turtles, but the cultured soft-shelled turtle has high price; and the culturing mode can obviously improve crab pond overall culturing benefits.