《三滴血》是由孙敬,郭阳庭执导，刘毓中,陈妙华,樊新民,肖若兰,孟遏云,全巧民,雷震中,伍敏中主演的剧情片。该电影于1960年在大陆上映。周人瑞是山西五台县人，在陕西韩城县经商。其妻在生下一对孪生儿子后死去。周人瑞无力抚养，便请邻居王妈妈将次子卖给李三娘为嗣，取名李遇春。留下长子托王妈妈乳育，取名周天佑。周人瑞因生意倒闭，携天佑回乡。周人瑞的弟弟周人祥夫妇为独霸家产，不认天佑是周人瑞的亲子，涉讼公堂。县令晋信书偏是一个死啃书本的腐儒，见汝南先贤传有“陈业滴血认亲”的记载，便用此法断案。见周人瑞父子滴血入水不融，即错断其并非骨肉，勒令押解天佑出境自行归宗。遇春在李三娘的抚养下长大成人，与李三娘亲生女儿晚春姐弟相称，感情甚为融洽。李三娘有意要遇春继承门户，与王妈妈商定，假称女儿晚春是自己的养女，欲与遇春婚配，但尚未成婚，李三娘病逝。土豪阮自用垂涎晚春已久，捏造庚帖，借吊唁之机，前来诈婚，挑起讼端。晋信书来审此案。晋信书仍用滴血认亲之法，见二人血液融合，误断二人乃一母同胞不能成婚，将晚春判与阮家成亲。洞房之夜，晚春施计灌醉阮自用，乘机逃走。周天佑被解出境，寻父不见，一日往五台山进香求签，途中见一猛虎追踪少女贾莲香，便舍命相救。二人情投意合，由贾莲香父母许婚，二人成婚。李遇春得知晚春逃出阮家，离家寻找。与周天佑相遇，二人相貌一样，同感惊异。交谈之后，二人结为金兰之好。时值瓦剌犯境，攻破边关，二人同去从军，因功得官。王妈妈离家追寻李遇春、晚春踪迹，途中与穷途潦倒的周人瑞相遇，得知彼此都遭到滴血认亲拆散亲人的命运。商定同作人证，前往五台县质问晋信书。晋信书为证明滴血认亲无误，又传周人祥父子到堂试验，不料血液不融，晋信书无言以对，又谬说周人祥之妻有外遇。正在此时，旗牌官报告大帅接受周、李二人请求，以晋信书错判官司提到大营问罪。晚春与莲香先后到达，父子、夫妻终于团聚。晋信书因断案荒谬被罢官。
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