The invention discloses a novel slurry refining and concentrating system. The novel slurry refining and concentrating system structurally comprises a slurry concentrator, a feeding pipe, a supportingframe, a discharging pipe, a slag discharging pipe and a bearing seat, the slurry concentrator is composed of a machine body, a spraying device, a concentrating mechanism, a driving motor set, a slurry transferring cavity, a stirring mechanism and a slurry guide hole. The slurry concentrator utilizes the spraying device to clean and blend raw materials; the stirring mechanism is used for stirringthe raw materials into fluff pulp; the concentrating mechanism is used for refining and concentrating the fluff pulp; the bonding density of the fluff pulp is improved; so that the fluff pulp is not easy to fall off, a hollow shaft uses a filter disc to filter and discharge the fluff pulp, the fluff pulp product prepared through the technology has the advantages of being high in dry bulkiness, good in absorptivity and moderate in fiber bonding strength, the performance requirement of subsequent fluff pulp for producing disposable hygienic products is met, and the quality defect of the fluff pulp product is overcome.