The present invention relates to a bent-core reactive mesogen with an asymmetric bifunctional group, a composition for an alignment film comprising the reactive mesogen, a liquid crystal cell using the reactive mesogen, and a liquid crystal display comprising same. The molecular weight of the bent-core reactive mesogen with an asymmetric bifunctional group according to the present invention can be adjusted by adjusting the number of central phenyl groups and terminal alkyl groups, and the liquid crystal cell in a vertical aligned (VA) mode has effects of being mechanically and thermally stable, and exhibiting excellent black visibility and a high liquid crystal response speed. In addition, there is an effect of fixing the orientation state structure of the molecular semi-permanently to enable control of the pretilt angle of the liquid crystal.