Doris Lessing's short story--One off the Short List,like most of her famed novels,is a manifestation of individual's living state in the lonely and absurd world.In this thesis,the writer attempts to interpret this story from the view of Sartrean existentialism by analyzing the middle aged protagonist's special journey of exploring himself with suffering of being“others”so as to indicate Lessing's pessimistic attitude to modern people's existence.