Problem to be solved. To provide: a method of producing a porous, highly active fish meat protein dehydrated material, in producing a fish meat kneaded product, capable of reducing a storage cost of the raw material, improving the production efficiency, and decreasing fluctuation in the quality of a fish meat kneaded product produced; the porous, highly active fish meat protein dehydrated material; and the fish meat kneaded product using the same as raw material. Solution. A method of producing a porous, highly active fish meat protein dehydrated material of this invention comprises: a preparation step of removing a fish head and guts to obtain a fish dress; a meat collection step of collecting fish meat from the fish dress; a rinsing step of washing the collected fish meat to obtain rinsed meat; a refining step of removing scales and small bones of the rinsed meat to obtain refined meat; a dehydration step of dehydrating the refined meat to obtain dehydrated meat; a stirring/mixing step of adding saccharide to the dehydrated meat and stirring/mixing the mixture to obtain a base; a molding step of molding the base into a sheet or the like; a freezing step of freezing the base using a freezing facility; and a freeze-drying step of sublimation-drying the frozen base using a freeze-drying machine.