The invention relates to a dyeing method for a steaple reyon fabric in an airflow cylinder with a low bath ratio. The dyeing method comprises the following steps: putting water into a dyeing cylinderof an airflow cylinder, putting the steaple reyon fabric in the dyeing cylinder, moving to completely soak cloth surfaces, and heating to 58-60 DEG C by controlling temperature increase speeds; feeding 10-20wt% of water back into a secondary cylinder, dissolving a one-bath deoiling agent and a permetant into the secondary cylinder, and sucking into the dyeing cylinder of the airflow cylinder to carry aids on clothe surfaces uniformly; feeding 10-20wt% of water back into the secondary cylinder, pulping and clarifying with active dyes and dispersants in the secondary cylinder, quantitatively pumping into the dyeing cylinder, enabling the airflow cylinder to operate continuously, and after complete pumping, enabling the airflow cylinder to operate continuously to soak the steaple reyon fabricinto the active dyes uniformly; feeding 10-20wt% of water back into the secondary cylinder for three times from the dyeing cylinder, adding anhydrous sodium sulfate and sodium carbonate at differenttimes, pulping and clarifying, sucking into the dyeing cylinder, keeping the temperature at 58-60 DEG C to operate so as to ensure uniform dyeing of the active dyes; cutting cloth, comparing colors, cleaning the cloth surfaces with clean water, and carrying out dyeing and shaping in aftertreatment. By adopting the dyeing method, the problems that a steaple reyon fabric has nonuniform dyeing, mixedcolors, long process time, excessive sewage and the like in an airflow cylinder with a low bath ratio can be solved.