Disclosed is a method for manufacturing a knitted tight-fitting garment with coloured indication lines for body part measurement. The method involves the following steps: with reference to the classification, specification and dimension tables for a human body type A, B, C or Y in national garment standards GB/T22849-2009 and GB/T22853-2009, respectively knitting, for an adult man or woman, tight-fitting garments of four different human body dimensions by using a weft knitting technique, with each tight-fitting garment being composed of a shirt and trousers, wherein in the manufacture of the tight-fitting garment for an adult man or woman, the stature, limb morphology and joint points, to be measured, of the body are arranged and inserted, in the form of different coloured indication mark lines, in garment pieces, i.e. the shirt and the trousers, of the tight-fitting garment according to the dimensions for the body type A, B, C or Y; and when a human body wears the knitted tight-fitting garment with coloured indication lines for body part measurement fitting the body type of the body, the coloured indication lines of the tight-fitting garment automatically show the parts and structure of the human body in three-dimensional blocks, so that the human body part measurement of the garment is rapidly and effectively carried out, thereby achieving the objective of human body measurement work being rapid, effective, convenient and time saving.