To provide a manufacturing method of a lamination core for industrially manufacturing the lamination core where winding to a magnetic pole portion can be performed with high density and manufacturing the lamination core with sufficient productivity from a core piece which is not divided and to provide a manufacturing device of the lamination core.

Processed boards are sequentially made to pass through a press mold line having a plurality of processing stations. A core piece 14 having a plurality of magnetic pole piece portions 16 whose both sides are formed by adjacent slots 20 are blanked. The core piece 14 is caulked/laminated via a caulking portion 17 which is previously formed so as to form the lamination core 10. In the manufacturing method, each slot 20 is divided in a circumferential direction and a half slot 27 on one side is punched and formed by a first punch and a die, and a half slot 28 on the other side, which is partially lapped on the half slot of the one side is punched and formed by a second punch and a die.