The present invention provides a safety gap filler (10) which is provided on an edge of a railway platform which is adjacent to tracks so as to minimize a gap between the platform and a train. The safety gap filler (10) of the present invention includes a fastening base body (11), which is attached to the edge of the platform (F) in a direction parallel to the tracks, and support bars (12), which protrude predetermined lengths from the surface of the fastening base body towards the tracks at positions spaced apart from each other at regular intervals. Each support bar (12) is inclined at a predetermined angle with respect to the fastening base body (11) in a direction in which the train travels, so that the support bars are elastically brought into sliding contact with the sidewall of the train.