The invention discloses a printing technology of polyester cotton blended knitwear. The technology comprises the following steps: 1, printing a pattern to be printed on transfer paper in a printing mode by using a pigment, and storing the transfer paper for later use; and 2, oppositely laminating the pattern printed surface of the transfer paper to the surface to be printed of the polyester cotton blended knitwear, and heating the laminated objects to realize transfer printing characterized by transferring of the pattern pigment on the transfer paper to the polyester cotton blended knitwear in order to obtain printed polyester cotton blended knitwear. The polyester cotton blended knitwear obtained through the printing technology of the polyester cotton blended knitwear in the above mode is comfortable, or an ornament made by using the polyester cotton blended knitwear is comfortable, the printed pattern is firmly adhered, adhesion in the pattern is prevented even in very hot weather, and shedding and fading are prevented even after multi-time cleaning.