A pneumatic tire comprises: a carcass having a carcass main body portion reaching a bead core of a bead portion from a tread portion via a side wall portion; a belt layer arranged in an inner side of the tread portion and an outer side of the carcass; and an inner liner made of an air impermeable rubber and forming a tire cavity. A barrier rubber layer improving an adhesion property between the carcass main body portion and the inner liner is provided between the carcass main body portion and the inner liner. The barrier rubber layer is formed by winding a long barrier rubber strip around an outer peripheral surface of the inner liner wound around a drum in a circumferential direction, forming an overlapping portion, and spirally.