There is provided a production method for a laminated coil, the production method including: a process of producing a coil part of one axis by stacking a flat coil in an axial direction, a process of bending the flat coil of a connection portion in an extended state thereof in a length direction to allow for the division of a first coil part and a second coil part, wherein the connection portion connecting two coil parts is produced by bending the flat coil of the connection portion, and a process of finally spreading the bent connection portion, such that the first coil part and the second coil part may be disposed to be parallel in the same direction on the same plane.