The invention discloses a processing method for chrome-free tanning a beach woolfell by adopting a chrome-free tanning agent DESOTAN H30, which comprises the following steps: soaking, fleshing, degreasing, softening, pickling, tanning, extracting alkali, wet grinding, re-tanning, drying, wetting back, dry cleaning, staking, conditioning, reducing, oxidizing, drying, wetting back, staking, dry grinding, dedusting, and obtaining the finished product. The method is the technology for preparing the beach white woolfell, adopts the chrome-free tanning agent to process the beach white woolfell, uses no chrome during the tanning process, and obtains the finished product, which is pure white, slightly curled and distinctive in style, keeps the natural property, contains less than 150ppm of free formaldehyde, has a shrinkage temperature higher than 75 DEG C and has practical production significances. The technology can not only realize zero emission of waste chrome and lower the sewage treatment cost for an enterprise, but also obtain the finished product which is pure white, slightly curled and artistic in appearance, feels plump and soft, contains 130mg/kg of formaldehyde and has a shrinkage temperature of 75 DEG C.