In order to solve the employment problems of linking and promote the development of the whole garment, a research from the respects of whole garment structure,knitting techniques and knitting efficiency. Firstly, the knitting theory on four-bed computerized flat knitting machine was discussed based on whole garment forming theory, knitting action of slide-needle and draw-off device. Secondly, according to the knitting principle of cylinder as the unit, the work proposed the whole garment structure in single cylinder, multi-cylinder and anomalous structure. And it gave examples of three structures. At the end, the key knitting techniques on four-bed computerized flat knitting machine of whole garment, such as rib, forming, sleeve – main body combination, neck ,joining shoulder seam and so on, is analyzed developing the turtle neck sweater of multi-cylinder structure as an example. And compared with pattern fashioning, knitting efficiency of whole garment was advanced more than 40%.