A tampon applicator 1 according to the present invention includes an outer tube 3 having a large-diameter section 3A for storing a tampon 2； and a small-diameter section 3B which is smaller in diameter than the large-diameter section 3A that is positioned at a base portion side more than the large-diameter section 3A； and a push-out member 4 which is inserted slidably into an opening portion 6 at a rear end of the outer tube 3 and is capable of compressing from rear the tampon that is stored in the large-diameter section 3A and then pushing out the compressed tampon 2 from an opening portion 7 at a front end of the outer tube 3, wherein at least one opening 10 is provided on an exterior face of the large-diameter section 3A.
