Abstract:Anthropometry is an important component element of fashion design, pattern research, clothing production and clothing MTM online. Anthropometric technology has went through the process from contact to non-contact, and from manual anthropometry to 2D image and 3D anthropometry. The purpose of this paper is to summarize symmetric and theoretic 2D image-based non-contact anthropometric ideas, and to solve the problem of measuring body circumference dimensions on 2D images in clothing e-commerce. Firstly it separates 2D image-based non-contact Anthropometry into three steps: image silhouette extracting and characteristic body measurement, girth calculation and error & accuracy analysis, and analyses the methods of every step; then it discusses the characteristics of the anthropometry operating and its' application in clothing e-commerce.