CONTAINER BODY

PROBLEM TO BE SOLVED: To provide a container body that reduces variation of strength of an engagement portion and when rotating a female screw cylinder against a container main body in a direction of fastening the cylinder, prevents an engagement portion of the female screw cylinder from riding over an engagement portion of a mouth portion.SOLUTION: A cap body comprises an outer cap having a female screw cylinder screwed to a mouth portion and an inner cap attached to the outer cap. In a container main body and the female screw cylinder are formed respectively an abutting/protruding portion 17 and an engaging/protruding portion 34 that are engaged with each other to restrict rotational movement toward a relative fastening direction R1 around a shaft of a container of a spout portion 15 and the female screw cylinder. The engaging/protruding portion 34 is protruded toward inside the container main body along the shaft of the container. In the inner cap are provided a covering portion 46 that covers the engaging/protruding portion 34 from the outside in a radial direction and a receiving portion 47 that can be supported to the engaging/protruding portion 34 from the rear in the fastening direction R1.