Separation in a chafer edge is suppressed, thereby improving durability of a bead part. In a pneumatic tire including a bead core (4) embedded in a bead part (3), a carcass ply (5) folded around the bead core and locked, and a chafer (9) having a reinforcing cord embedded therein arranged so as to cover the carcass ply (5) around the bead core, a rubber sheet is prepared using a wet masterbatch containing natural rubber and/or polyisoprene rubber, and carbon black, and the rubber sheet (15) is interposed between a folded part (5B) of the carcass ply and an edge (9AE) of the chafer overlapping the folded part.