Disclosed is a portable sphincter training tool in that the general male can wear on his body and naturally exercise his sphincter at recess or in the course of daily life, whereby improving physically and spiritually in vitality and confidence. The portable sphincter training tool comprises a penis induction pipe for receiving a penis an adhesive plate coupled to the penis induction pipe, adhered to an users body during wear and having a vacuum pump for making the penis induction pipe vacuous and a sphincter tension necklace coupled to one side of the adhesive plate and hanged on an users neck in order to stably adhere the penis induction pipe to the adhesive plate and apply a tension to the sphincter according to a predetermined movement during adhesion wherein an insertion portion of the penis induction pipe is bent inward in such a manner that the penis is stably received upward.
