《马路天使》是由袁牧之执导，周璇,赵丹,魏鹤龄,钱千里主演的剧情片。该电影于1937年在大陆上映。1930年代，小云、小红（周璇）姐妹被人骗到上海卖给琴师和妓院老鸨夫妇，小云被迫做了暗娼，小红年纪尚小，又天生有一副好嗓子，便随琴师去茶楼终日卖唱。姐妹两人住在贫民窟，在她们对面，住的分别是报贩老王和吹鼓手陈少平（赵丹）。因为闲来无事时陈少平常同小红对窗玩闹，两人渐生感情。小红卖唱时被流氓古成龙缠上，对方欲强霸她为妾，小红找陈少平商量对策，两人本想借助律师将正义伸张，不想律师双眼只认钱，无奈之下只得逃走，而这一过程中，老王对小云由怜生爱，可是小云却因自卑不敢正视。琴师偶知陈少平与小红下落，放风给古成龙，古成龙赶到小红住处时，屋里只有她和小云，两人生命危在旦夕。
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