PURPOSE: To provide a device, by which casting-related part integratively formed with a die casting product can efficiently and surely be cut and removed.

CONSTITUTION: This device is constituted with a product holding member 13 for holding a part of the casting-related part C for the die casting product A, a casting-related part cutting member 15 having a hammer part 14 so as to be possible to shift to three dimensional directions and arranging the hammer part so as to face to the casting-related part C for the die casting product A except the part held by the product holding member 13 and cutting and removing the casting-related part C by abutting the hammer part 14 on the casting-related part C, a casting-related part incorporating member 16 for incorporating the cut and removed casting-related part C and a chuter 17 for feeding out the die casting product A after cutting to a product incorporating part 46.