The Korean War which broke out in 1950 made a deep impact on the Korean society. From the view of human losses, the war caused more than 5 millions’ death and more than 10 millions of people missing and separated from their families. Thus many Korean postwar novels confronted these tragedies by involving the theme about losses of family members. These novels usually focused on losses of parents, losses of husbands, and losses of children that hurt families greatly. Especially, as the male supporter of the family, the loss of fathers or husbands made their family members naturally sink into life and economic crisis. By analyzing the novels with the theme on family losses, the thesis tries to explore the damage the war made both on people and human nature, and meanwhile expound the meaning of novels of this kind in the Korean modern literature history.