The invention discloses a rapid fish flesh separating device which comprises a rapid fish flesh separating device body. The device body comprises a separation cell. A feeding inlet is formed in the upper end of the separation cell, a motor is arranged above the feeding inlet, the output end of the motor is connected with a rotating shaft, the rotating shaft is hollow, the rotating shaft is sequentially connected with a trituration device A, a separating plate and a stirring roller from top to bottom, the lower end of the separation cell is connected with the bottom of a liquid storage tank through a water pipe, a water pump is arranged on the water pipe and located between the separation cell and the liquid storage tank, the upper portion of the separation tank is connected with the upperportion of a screening tank through a collecting pipe, the lower end of the screening tank is communicated with the upper portion of the liquid storage tank through a liquid collecting pipe, by arranging the trituration device A, the separating plate and the stirring roller, fish is triturated, separated and stirred in sequence, fish flesh and fish bones are separated, hot water in the liquid storage tank is pumped into the separation cell from bottom to top through the water pump, fish flesh separation is facilitated, and the device is simple in structure, convenient to operate, rapid in fishflesh separation speed, complete in separation, capable of saving energy, environmentally friendly and suitable for large-scale popularization.