《天蚕变（粤语版）》是由麦当雄,萧笙执导，徐少强,顾冠忠,苗可秀,余安安,伍卫国,马敏儿,张瑛,鲍汉琳,梁天,杨泽霖,韩义生,蔡瓊輝,刘纬民,麦天恩,張瑪莉,罗乐林,甘山,文千歲,刘国诚,柳影虹,刘江主演的港台剧。该电视剧于1979年在香港上映。少年云飞扬（徐少强饰）来历鲜为人知道，他虽与武当派掌门青松（张瑛饰）有一段不寻常的关系，但他在武当派却是地位卑微，其後获得一神秘黑衣人秘授武功。青松与武林煞星独孤无敌（杨泽霖饰）三度较量，可惜俱败对方手下，使独孤无敌称霸武林。武当山上接二连三发生离奇血案，皆涉及云飞扬，最後青松竟遭惨死，使他百感交集，遂离开武当山。当时，武林中有一种神奇武功「天蚕诀」，该种武功的秘诀在于「变」，倘若学者不精，束茧自缚，反连本身的武功也丧失，若能领悟其中奥秘，晓得如何变化，则可使武功臻至化境，成为武林中地位最高的盟主。云飞扬经过无数离奇遭遇，终于学会「天蚕诀」，并且得到美人青睐，他与独孤凤（曲可秀饰）、傅香君（余安安饰）、伦婉儿（马敏儿饰）的缠绵绯恻爱情，令他感到虽然能击败天下第一高手独孤无敌，但换来的只是一片悲哀。
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