The present invention relates to a male urinary incontinence prevention device, and the subject matter relates to a male urinary incontinence prevention device comprising: a body having an accommodation space in which the penis is accommodated； a urethral pressing unit formed in the accommodation space so as to press the urethral canal； and an adjustment means for adjusting the size of the accommodation space. Therefore, the present invention is very conveniently worn or removed by allowing the size of the accommodation space to be easily adjusted according to a user's body type when an adjustment button is pressed during use, and has an overall shape similar to that of the penis so as not to be exposed to the outside when worn, thereby improving the user's satisfaction and self-esteem.
