A shoulder-blade incision-making apparatus is provided and includes: a fixing jig on which the poultry carcass which is eviscerated and which has leg parts removed is to be placed and fixed; a fixing jig conveyer forming a conveyance path of the fixing jig and convey the fixing jig along the conveyance path; a first separating member disposed above the conveyance path movably upward and downward; and a first driving device for moving the first separating member in an upward and downward direction. The first driving device is operated to move downward the first separating member and move the first separating member along a surface of the shoulder blade of the poultry carcass in accordance with a timing when the poultry carcass fixed to the fixing jig reaches a meat-separation position below the first separating member, therefore the meat portion attached to the shoulder blade is separated from the shoulder blade.