Abstract: This article aims to carry out research and analysis the workmanship of modern folk side opening coat in jiangnan area. Through visiting the masters who use the traditional ways to make folk coats in jiangnan area,the record and analysis and research the material to make modern folk side opening coat which include fabric,lining,stuffing,paste,thread and so on; and cutting techniques include cutting body,sleeves,collar, side opening ,cutting under fly, facing and button material and sewing technique include, sew up sleeve seam,starched,sewing,cutting linning,fill stuffing ,self collar,sew button and bar tack at slit , record, demobilization, analysis and research and part of these process have been illustrated by diagrams ; Jiangnan region people taste is unique and skilful production process, fully reflect the local people high demand for the comfort of wearing and craftsmen intelligence.