Objective To investigate the clinical characteristics of acute pancreatitis(AP) among patients with diabetes mellitus(DM).Methods We enrolled 329 cases of AP from Guangdong General Hospital from 2013 to 2016,including 80 with a history of DM(DM with AP group)and 249 without(simple AP group). Based on reviewing the medical records,we collected the clinical data about sex,age,past medical history,etiology,levels of triacylglycerol(TG) and total cholesterol(TC),length of stay(LOS),incidence of mortality,severi...