To provide a flexible container excellent in durability of a conductive resin layer of an earth cable connection part, and a manufacturing method for the same.SOLUTION: An earth cable connection part 7 is extended from an outer periphery part 4a. A conductive sheet 8 is interposed between the outer periphery part 4a and a peripheral wall part 2. When subjecting conductive tarpaulin of the peripheral wall part 2 and the outer periphery part 4a of conductive tarpaulin of a lower lid part 4 to high-frequency welding, the peripheral wall part 2, the conductive sheet 8 and the outer periphery part 4a are subjected to high-frequency welding in a state where a lower part of the conductive sheet 8 is sandwiched between an upper part of the outer periphery part 4a and the peripheral wall part 2.SELECTED DRAWING: Figure 4