The invention discloses a dyeing and finishing process of a coffee-yarn blended and knitted fabric. The dyeing and finishing process is characterized by comprising the following steps: preparing grey fabric, pretreating, dyeing, soaping, softening and carrying out after finishing, wherein a mild pre-treatment degreasing process is adopted; and an active double-dyeing process of firstly dyeing, dispersing and dyeing is adopted to dye, so that the difficulty in dying with the same color of the blended and knitted fibers is solved; through control on a finishing agent and the amount of the finishing agent in the after finishing process of the coffee-yarn blended and knitted fabric, the problems of same color and different colors in the dyeing process of the coffee-yarn blended and knitted fabric are solved; good air permeability and relatively good rubbing fastness are obtained; and meanwhile, a plurality of efficacies that the coffee-yarn blended and knitted fabric is capable of absorbing stink, removing an odor, storing heat, keeping warm, absorbing moisture and drying quickly in an far infrared manner are taken into account.