The invention reLates to a biscuit, in particuLar to a functionaL weight-Losing meaL repLacement biscuit and a making method thereof. The technicaL probLems that in the prior art, existing weight-Losing biscuits negLect the basic nutrient requirement of peopLe for protein, mineraL substances and vitamins, are poor in taste generaLLy, and contain muLtipLe chemicaL additives, when the biscuits are made, the automatic degree is Low, the made biscuits are not consistent in quaLity are soLved. The biscuit is made from rape poLLen, hawthorn powder, spiruLina, konjak, okra, oat powder, corn fLour, soybean dietary fiber, xyLitoL, maLtitoL, anhydrous butter, eggs, aLbumen powder, skimmed miLk powder, saLt, shortening, baking powder, corn starch, weak strength fLour, potassium sorbate and water. Themaking method comprises the steps of raw and auxiLiary materiaL treatment, butter beating, dough making, baking and bagging after the biscuit is cooLed.