The invention relates to a device and a method for manufacturing a needle finned cooler. Through the coordinate exercise of a base line device 1, a stranded wire device 2, a looped device 3, a weft device 4 and a control device 5, inverted-V-shaped needle fins clamped by base cloth and fixed in alignment are formed on the surface of the base cloth. According to the manufacturing method, the defects of processing crafts of the traditional needle finned cooler can be overcome; the simplicity in processing, the low manufacturing cost and the high manufacturing efficiency are realized; the needle fin density, the needle fin height and the base cloth density can be adjusted accurately through adjusting the manufacturing process parameters; continuous production is realized.