The present invention relates to a synthetic resin cup comprising: a cup of synthetic resin material, the bulk of the cup, inserted from the bottom to the top, expanding and contracting, having an elastic recessed gap around the outer edge of the top rim; and a holder for supporting the cup by housing the length of the cup, from the bottom to the top rim, in close contact to economize on the synthetic resin. Additionally, the present invention relates to the synthetic resin cup in which the cup and the holder hook onto each other to be coupled. Furthermore, the present invention relates to the synthetic resin cup in which, if the cup is made of transparent material, the contents of the cup can be seen from the outside through the exterior thereof.
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