西方古典戏剧中的“三一律”原则,强调情节、地点、时间的整一性;起源于古希腊悲剧,兴盛于17世纪的法国,式微于浪漫主义浪潮。但是,在同现代的国产低成本喜剧电影结合后,点石成金,产生了奇妙的化学反应。本文将阐述“三一律”原则在电影叙事、电影制作、电影表现力三个方面对国产低成本喜剧电影的启示。 The principle of “Trinity ” in western classical drama emphasizes the unity of plot, place and time. It originated from the ancient Greek tragedy and flourished in France in the 17th century. However, with the modern domestic low-cost comedy film combination, the point of stone into gold, produced a fantastic chemical reaction. This article will elaborate on the enlightenment of “Three laws ” principle on the domestic low-cost comedy film from three aspects of film narration, film production and film expressiveness.