Background: Abdominal trauma is the third leading cause of death in trauma patients and can be found in about 7-10% of the total number of trauma cases. The Blunt Abdominal Trauma Scoring System (BATSS) provides a high-accuracy score system for diagnosing injury to intra-abdominal organs in blunt abdominal trauma patients based on clinical features, such as patient history, physical examination. Objectives: To determine Blunt Abdominal Trauma patients ‘signs, as well as clinical data, and to clarify the accuracy, sensitivity, specificity, positive and negative predictive value of Blunt Abdominal Trauma Severity Score (BATSS). Patients and methods: This was a cross sectional study that was conducted on 100 cases admitted with bunt abdominal trauma in Al-Hussein Hospital, Al- Azhar University from March 2020 to October 2020, which included 50 males (50%) and 50 females (50%), their ages ranged from 18.0 to 60.0 years (mean ±SD 38.53 ± 12.11); included majority of cases from 20 to 40 year (54%), after initial resuscitation and achieving hemodynamic stability, All patients were subjected to careful examination, and all patients underwent the FAST ultra sound and plain radiograph of chest and abdomen scan and blunt abdominal trauma severity score was calculated, decision was taken for further investigations and CT scan if the patient was stable. If patient was hemodynamic unstable, the patient was resuscitated and planned for emergency surgery if indicated. Results: 64% were High risk (≥12) according to blunt abdominal trauma severity score, 26% was of medium risk (8 – 11), and only 10% was of low risk (< 8) 19% had perforated gut, 32% had spleen hematoma, 13% had liver tear, only 1% had kidney hematoma, and 1% had shattered spleen. There was non-statistical significant difference between presence or absence of mortality/morbidity and blunt abdominal trauma severity score, and there was statistical significant difference between procedure done and blunt abdominal trauma severity score. Conclusion: BATSS can be a tool of early identification and stratification of patients blunt abdominal trauma, and it is a new scoring system based on clinical signs, can be used in predicting whether a blunt abdominal trauma patient needs laparotomy or not.