Strategies for invasive intervention in acute pancreatitis include sequential or combined use of multiple drainage and debridement modalities. The more widely used is the step-up approach, which requires an individualized and multidisciplinary (internal medicine, interventional radiology, endoscopy, surgery, critical care medicine, and nutritionists) approach. The available evidence from randomized controlled studies is from highly selected subject populations, and it is unclear whether the results can be applied to complex clinical situations in real clinics, and the optimal strategy for drainage of peripancreatic lesions in different patients still needs to be evaluated in the real world. This study intends to establish a prospective single-center cohort for real-world analysis to collect comprehensive clinic information and clinical outcomes, to evaluate the effectiveness and safety of existing intervention strategies, especially the timing and modality of interventions, in real-world clinical practice, and to explore the key factors affecting patient prognosis.