Objective: (1) To define the role of ultrasonography and Paracentesis in deciding the treatment plan (conservative/operative) in blunt abdominal trauma. (2) To find out the specificity and sensitivity of ultrasonography and Paracentesis in blunt abdominal trauma. Design: Prospective study. Setting: VSSIMSAR. Period: From December 2012 — December 2014. Materials and methods: Seventy Five patients irrespective of age, sex and mode of blunt injury included in the study. All the patients presented in emergency ward with blunt trauma abdominal underwent ultrasonography & Paracentesis. Results: In 66 out of 75(88%) patients, the abdominal ultrasonography showed positive findings with the sensitivity of 82.7%, the specificity 89% and accuracy 90.9%. Paracentesis was positive in 55 patients out of 66 (83%) with 97% sensitivity, 73% specificity and 89%accuracy. Conclusion: Paracentesis is as effective as ultrasonography to pick up the intra-peritoneal fluid in the assessment of blunt abdominal trauma patient but with slightly less sensitivity, specificity and accuracy