The invention discloses a manufacturing method for fishbone broken milkfish. The method includes the following steps: a, a step of de-scaling, namely the step of scraping the fish scales on the bodiesof milkfish; b, a step of cutting open the fish, namely the step of excising the head and tail of the milkfish, and symmetrically cutting the milkfish into milkfish pieces; c, a step of gut taking and fishbone removing, namely the step of taking out the gut of the milkfish, and removing the spine spur, fin bones and front fish belly bones of the milkfish; d, a step of breaking the fishbone, namely the step of horizontally fine-cutting the rear fish belly bones, back bones and side back bones and fish flesh of the milkfish; and e, a step of cleaning and packaging, namely the step of performingcleaning and sterilizing, performing vacuum packaging, and finally performing refrigeration or freezing. Through the utilization of the method, time and labor can be saved, yield can be increased, costs can be reduced, people cannot be stabbed when eating the fish, the nutritive values of fish flesh, complete fish skins and tiny broken fishbone can be reserved, and therefore, the method can enhance the development and consumer markets of the whole milkfish industries.