The invention discloses a method for manufacturing an antibacterial antistatic knitted garment. The method comprises the following specific steps of preparing conductive antibacterial composite fibers; blending the prepared conductive antibacterial composite fibers and common chemical fibers to prepare warp yarn; conducting sizing treatment on the warp yarn obtained in the second step through functional sizing liquid; spinning the sized warp yarn to obtain the antibacterial antistatic knitted garment. The prepared composite fibers have a large number of amino groups and sulfhydryl groups, theamino groups and the sulfhydryl groups are subjected to a cation exchange reaction to directly adsorb silver ions onto the composite fibers, so that the surfaces of the prepared conductive antibacterial composite fibers contain abundant silver ions, the function force between the silver ions and the composite fibers is high, and the situation can be avoided that in the later stage, the conductiveand antibacterial properties of the garment can be reduced due to the desorption of the silver ions in the garment cleaning process.