To provide a ball chain which is manufactured easily and has higher tensile strength than a conventional ball chain and a method of manufacturing the ball chain.

The ball chain includes a plurality of spherical parts 1 which are formed into a spherical shape having a hollow part S and a plurality of connecting parts 2 for connecting arranged spherical parts 1 with each other so as to be freely rockable by imparting plastic deformation to a plurality of places along the longitudinal direction of a material 11 to be worked which is made into a sleeve shape having joint lines 10. The spherical parts 1 are provided with laser welded parts 3 which are continued linearly over the entire length of the joint lines 10 which are left after forming.