To improve a deformation resistant strength of a hollow blow molded container by integrally molding a plurality of ribs in an axial direction of the container.

A plurality of ribs 2 are integrally molded at a predetermined interval in an axial direction on an inner periphery of the hollow blow molded container 1 so as to finish near a bottom 7 through a peripheral wall 6 from a shoulder 5 under a bottle neck portion 4 formed with a threaded part 3. The ribs 2 are formed axially on the inner periphery of the container 1, and the ribs 2 are thicker than general thicknesses of the wall 6 and the bottom 7 and projected inward. The plurality of the ribs are formed in the axial direction of the container thereby to improve a deformation resistant strength of the container, to lose a weak feel of touch when grasped, and to facilitate its handling. Further, the container can easily maintain self-supporting properties, and the containers can be stacked by improving its buckling strength.