Abstract: The invention discloses a method for preparing an organic copper complex of organic copper antibacterial polyamide yarn. The method for preparing the organic copper antibacterial polyamide yarn comprises the following steps: mixing urea, hexanolactam and acetamide according to a ratio of 1:(0.2-0.4):(0.2-0.4) in parts by weight to prepare a coordinated ionic liquid; adding sodium chlorate, potassium permanganate, sodium peroxide and copper powders according to a ratio of 1:(1-2):(1-2):(2.5-2.9) in parts by weight into 3-3.5 parts by weight of the coordinated ionic liquid to prepare the organic copper complex; slicing the organic copper complex and PA6 which are in a ratio of (80-86):(14-20) in parts by weight and putting them into a twin-screw extruder to prepare a spinning fusant, spinning, cooling and winding to form a cylinder.