In general, Lao She is a writer accustomed to depict local color in his novels. However, when the Anti-Japanese War broke out, this novelist suddenly refused to portray story of Beijing and stop using the vernacular of Beijing in his works. Until around 1943, Lao She re-characterized the local scenery of Beijing in his novels. This paper, through the analysis of this important phenomenon of modern Chinese literary History, attempts to reveal the reason of the lost and found of the local color in Lao She's works. This article argues that Lao She stopped depicting the local scenery at the beginning of the Anti-Japanese war, because he was worried about depict a specific area affect his readers who come from the southern China to understand his works. Around 1941, however, when Lao She began to take the local color as the means to carry the national narrative, the representations of Beijing reappeared in his novels.