PURPOSE: A composition for prevention and treatment of acute pancreatitis containing Estern prickly pear as an active ingredient is provided to reduce the ratio of pancreas weight/body weight (PW/BW), the activation of blood serum amylase and lipase, inflammation of pancreas tissue, the extent of edema and necrosis, MPO activation, and the extent of the inflammation and edema of an inflammatory reaction promoting cytokine and a lung tissue. CONSTITUTION: A composition for prevention and treatment of acute pancreatitis includes Estern prickly pear extract as an active ingredient. The extract is extracted by using stems of Estern prickly pear. The solvent for the extraction of the extract is ethanol. Daily dose of the extract is 0.0001 to 500 mg/kg. Health functional food for prevention and alleviation of acute pancreatitis includes Estern prickly pear extract as an active ingredient.본 발명은 천년초(Opuntiahumifusa) 추출물을 유효성분으로 함유하는 급성 췌장염의 예방과 치료를 위한 조성물 및 건강기능식품에 관한 것이다.본 발명에 따른 조성물은 췌장 무게/체중의 비(PW/BW), 혈청 아밀라아제 및 리파아제의 활성, 췌장 조직의 염증, 부종 및 괴사의 정도, MPO활성, 염증반응 촉진 사이토킨 및 폐 조직의 염증 및 부종 정도를 감소시킴으로써, 급성 췌장염의 진행을 억제하고 손상된 조직을 개선할 수 있는 효과를 보유하고 있다.