摘要Background:Nontraumatic acute abdominal pain(AAP)accounts for a large proportion of emergency department(ED)admissions.This study aimed to explore the underlying correlations among basic information,imaging examinations,and diagnoses.Methods:A total of 7453 patients complaining of AAP,admitted to the ED of Zhongnan Hospital of Wuhan University,were enrolled in this retrospective study from January 1 to December 30,2019.We collected the following information from the patients:sex,age,date of visit,pain location,nature of pain,level of severity,imaging(computed tomography,x-ray,and ultrasound),diagnosis,and outcomes(re-lease from the hospital,transfer to another hospital,transfer to another department,observation room,hospitalization,or death).Results:According to this study,AAP was more common in female than male.A total of 82.11％patients of AAP were in level 3 of se-verity,while 0.19％patients were in level 1.A total of 77.20％of the patients had undergone imaging.Swelling pain and colic are the 2 most common types of AAP.Nonspecific abdominal pain(NSAP)is the most common diagnosis.In the diagnosis of NSAP and gastroenteritis,female patients were more prevalent than male patients,but for renal colic,male patients were 3 times as many as female patients.Non-specific abdominal pain,biliary colic,and cholecystitis are the 3 leading causes in patients 65 years or older.Nonspecific abdominal pain,renal colic,and gastroenteritis are the 3 leading causes of AAP in patients younger than 65 years.Conclusion:With the help of imaging,clinicians can specify a diagnosis and perform corresponding treatment in most cases.However,making a precise diagnosis of AAP within a short period is still challenging.Further research should be conducted to seek safer and more effective techniques to streamline clinicians'work.