Extranodal natural-killer (NK)/T-cell lymphoma (ENKTL) is an aggressive subtype of non-Hodgkin lymphoma with a poor prognosis. Notably, patients with advanced-stage disease or early-stage non-upper aero-digestive tract (NUAT) involvement frequently develop hemophagocytic lymphohistiocytosis (HLH), necessitating more effective therapeutic interventions. This Multicenter, Randomized Controlled Clinical Study aimed to compare the efficacy and safety of P-GEMD and P-Gemox in the treatment of newly diagnosed early NUAT or advanced-stage ENKTL.