The invention relates to a series tannin extract raw material ultra-fine crushing preparation as well as a combined and coupled preparation process and method for series tannin extract products. Prepared ultra-fine powder materials of valonia tannin extracts, larches, coast oaks, emblic leaf flowers, black wattles, myrica esculenta, red roots, live oaks and acacia mangium barks are respectively carried out by combined and coupled process and equipment processing of double-dynamic digestion or transition type continuous digestion, spiral sedimentation centrifuging separation (horizontal spiral unloading centrifuging separation), foam separation, sedimentation separation, plate frame filter pressing and the like, so as to correspondingly solve the problem that filtration, sol, micro-fine fiber grains, insoluble substances, non-tannin and the like in a producing and processing process of tannin extract raw materials are high. Therefore, the tannin extract products of industrial-grade valonia tannin extracts, larch tannin extracts, coast oak tannin extracts, emblic leaf flower tannin extracts, black wattle tannin extracts, myrica esculenta tannin extracts, red root tannin extracts, live oak tannin extracts and acacia mangium tannin extracts, which meet the industrial standard, are prepared.