PURPOSE: A manufacturing method of ham which contains natural calcium and ham which contains natural calcium are provided to supply minerals, to enhance quality and to extend storage period. CONSTITUTION: A manufacturing method of ham containing natural calcium comprises the following steps: cutting pork after washing (first process)； mixing natural calcium, distilled water, sodium chloride, whey protein, fructo-oligosaccharide, natural seasoning, and glutinous rice powder with cut pork (second process)； filling mixed meat from a vacuum charger to a retainer (third process)； smoking the filler after drying the same in a smoke house (fourth process)； heating the dried and smoked product (fifth process)； and cooling and vacuum packing after washing the heated products (sixth process). The natural calcium is one mixed one or two among natural calcium I and natural calcium II. The natural calcium I is manufactured by the following steps: washing shells； heating the same at 1000 deg. Celsius for 1-10 hours and pulverizing into 200-500 meshes. The natural calcium II is manufactured by the following steps: Washing shells； heating the same at 200 deg. Celsius for 1-10 hours； and pulverizing into 200-500 meshes. The shell is one or two or more among oyster, cockle, scallop, shell, and abalone. [Reference numerals] (AA) Cutting process (first process)； (BB) Mixing process (second process)； (CC) Charging process (third process)； (DD) Drying and smoking process (fourth process)； (EE) Heating process (fifth process)； (FF) Cooling and packing process (sixth process)본 발명은 천연칼슘을 함유한 햄의 제조방법에 관한 것으로서, 돈육을 세척한 후, 10~20mm의 크기로 절단하는 절단공정(제1공정)과, 상기 제1공정에서 절단된 돈육에 천연칼슘, 증류수, 염화나트륨, 유청단백질, 프락토올리고당, 천연조미료, 찹쌀파우더를 혼합하는 혼합공정(제2공정)과, 상기 제2공정에서 혼합된 혼합육을 진공충전기에서 리테이너(retainer)에 충진하는 충진공정(제3공정)과, 상기 제3공정에서 충진된 충진물을 훈연실에서 50~60℃에서 20~30분 동안 건조한 후, 상기 건조된 건조물을 55~65℃에서 20~30분 동안 훈연하는 건조 및 훈연공정(제4공정)과, 상기 제4공정에서 건조 및 훈연된 훈연물을 65~75℃가 될 때까지 20~40분 동안 가열하는 가열공정(제5공정)과, 상기 제5공정에서 가열된 가열물을 10~15℃의 증류수
