This paper proposes a new kind of low-cost two-stage processing technique aiming at producing lowsulfur purified konjac flour. This technique combines traditional dry and wet processing. This study includes use of advanced techniques in the context of industrial production. The combination of dry and wet processing methods results in the production of purified konjac flour meeting the quality criteria of the top grade as per Chinese industrial standard for konjac flour. The konjac flour obtained by this technique is characterised by a high output and high viscosity on the one hand and low sulphur content and low cost on the other hand.