In this paper, we study the hypersurface families with Smarandache curves in 4-dimensional Galilean space G 4 and give the conditions for di¤erent Smarandache curves to be parameter and the curve which generates the Smarandache curves is geodesic on a hypersurface in G 4 : Also, we investigate three types of marching-scale functions for one of these hypersurfaces and construct an example for it.