PROBLEM TO BE SOLVED: To provide an ejaculation promoting device capable of increasing ejaculation efficiency.SOLUTION: An ejaculation promoting device 1 includes: a massage part 42 which is formed like a telescopic tube from a resin and which has a penis insertion part 423b provided on a front surface: a housing body 21 which is formed in a hollow shape with an opened front surface and which internally houses the massage part 42 from the front surface fixing means 5 for fixing the front side of the massage part 42 to the housing body 21 and driving means for expanding/contracting the massage part 42, which has the front side fixed to the housing body 21 by the fixing means 5, in a longitudinal direction A.COPYRIGHT: (C)2014,JPO&INPIT【課題】射精効率を上げることができる射精促進装置を提供する。【解決手段】射精促進装置1は、樹脂により伸縮可能な筒状に形成されて前面にペニスの挿入口423bが設けられたマッサージ部42と、前面が開口した中空状に形成されて当該前面から内部にマッサージ部42を収容する収容体21と、マッサージ部42の前部側を収容体21に固定する固定手段5と、固定手段5により前部側が収容体21に固定されたマッサージ部42を前後方向Aに伸縮させる駆動手段とを備えている。【選択図】図1