The invention provides a vest processing machine, and belongs to the technical field of garment processing equipment. The problems that a vest is slow in processing and monotonous in color and style are solved. The vest processing machine comprises a rack, wherein the rack is provided with a printing and dyeing device for printing and dyeing fabric, a cutting device used for cutting the fabric obtained after printing and dyeing into vest parts, a sewing device for sewing the vest parts to form the vest and a collecting device for collecting the processed vest; the printing and dyeing device, the cutting device, the sewing device and the collecting device are sequentially arranged along the rack; the printing and dyeing device comprises a vest printing and dyeing device and a printing and dyeing table; a feeding roller is arranged at one end of the printing and dyeing table, and a discharging roller is arranged at the other end of the printing and dyeing table; a first driving motor fordriving a front conveying roller and a rear conveying roller is arranged on the rack, the top of the vest printing and dyeing device is provided with a connecting pipe and a dye liquor tank, and thedye liquor tank is connected with a vest printing and dyeing machine through a connecting pipe; a printing and dyeing plate is arranged at the bottom of the vest printing and dyeing device. The vest processing machine has the advantage of improving the processing efficiency and the color and style of the vest.