The invention discloses a headless continuous casting and rolling ferrite rolling method and device of a low / micro-carbon steel coil for deep drawing and belongs to the field of metallurgy steel rolling. According to the headless continuous casting and rolling ferrite rolling method and device of the low / micro-carbon steel coil for deep drawing, continuous casting for blank forming, rough rollingof a rough rolling unit, temperature control of a cooling channel, descaling of high-pressure water, ferrite rolling of a finishing mill group, cooling of a layer cooling device, high-speed flying shear and shunt winding and coiling of a reeling machine are carried out. By means of the method and device, the problems that heating / soaking of a heating furnace is needed before rough rolling of a conventional hot rolling process, and cooling with temperature retaining is needed due to the fact that the temperature difference of rough rolling of an austenite zone and finish rolling of a ferrite zone is large and the problems that for thin slab casting and rolling processes with CSP as a respective, heating / soaking or induction heating for temperature supplementing of a heating furnace is needed are solved, the advantages that the arrangement is compact, the investment is small, the production efficiency is high, safety and reliability are achieved, energy is saved, environmental friendliness is achieved, and the cost is reduced are achieved, and the low-carbon / micro-carbon steel coil for deep drawing is produced through headless continuous casting and rolling and ferrite rolling.