The invention relates to a method for making a knitted tight-fitting garment with color guide lines of a body measurement part. The method is implemented by the following steps: women or men knit tight-fitting garments of four different human body dimensions by adopting a weft knitting technology according to A, B, C and Y human body shape classification specification and dimension tables in national garment standards GB/T22849-2009 and GB/T22853-2009 respectively; each tight-fitting garment consists of a coat and trousers; when making the tight-fitting garment, the men or the women insert and arrange body and limb forms and joint part points, needed to be measured, of the body in coat pieces and trousers pieces of the tight-fitting garment by different color guide marker lines according to A, B, C and Y body shape dimensions; when a human body wears the knitted tight-fitting garment with the color guide lines of the body measurement part, the color guide lines of the tight-fitting garment automatically present human body parts and structures in a three-dimensional block way; and therefore, the human body part measurement work of the garment is quickly and effectively guided to be carried out, and the purpose of quick, effective, convenient and time-saving human body measurement work is achieved.