Observed properties of gamma-ray burst (GRB) host galaxies are important clues to
understand the nature of GRB progenitors. However, the properties of the host galaxies
don’t directly tell us the nature of the GRB progenitors, and the decipherment of the clue
relies on our understanding of general galaxies. The relation between stellar mass, star
formation rate (SFR), and metallicity of star forming galaxies (so called the fundamental
metallicity relation) has recently attracted attention regarding its possible impact upon
our understanding on the properties of the long GRB host galaxies. In this study, I show
the possibility of redshift evolution of the mass–SFR–metallicity relation which has been
claimed to be independent of redshift, and discuss implications of the evolving relation
for the properties of GRB/SN host galaxies.