To provide a rotary type automatic packaging machine capable of correctly adjusting the position of each mechanism on the top seal according to the width of a packaging film.

The rotary type automatic packaging machine 1 comprises a preheat seal bar 91 in which a top seal mechanism 9 heats an upper edge of a packaging film 131, a top seal roller 92 to form the top seal by pressing the upper edge heated by the preheat seal bar 91, and a position adjustment mechanism 10 which has the preheat seal bar 91 and the top seal roller 92 integrally mounted thereon and simultaneously adjusts the positions of the preheat seal bar 91 and the top seal roller 92.