Hitherto, when securing splash guards, same have been secured by means of a securing device on the inside of the bowl of the sink, but this has been inconvenient in that securing the bottom edge of the splash guard to the top edge of the sink rim been ensured through the use of two-sided tape or suckers or the like, and, since the inside of the bowl is very wet, a substantial amount of grime and bacteria and the like occurs on the securing device of the splash guard which is on the inside of the bowl, and, additionally, water seeps in between when a splash guard has been secured to the top edge of the sink rim, such that the article frequently drops off and does not stick well. The present invention relates to a sink splash guard and securing device which is provided on a sink and guards against water that splashes when washing dishes, and the present invention is adapted such that, when the splashguard is secured to a sink, the securing device is able to secure the splashguard to the front-side wall of the sink rim, where there is no wetness, rather than the inside of the bowl, and thus is adapted such that same does not fall off even in long-term use and, additionally, the invention is adapted such that the width of the securing device (3) can be adjusted so as to allow most possible uses despite the fact that domestic sinks have different widths (13).