Peripheral T-cell lymphoma (PTCL)is a distinct and heterogeneous histopathologic subtype of non-Hodgkin lymphoma (NHL), accounting for \~10%. Patients with PTCL still have poor treatment response and prognosis under conventional CHOP regimen. This multi-center, prospective, registry study is designed to analyze the clinical characteristics and prognosis of different molecular subtypes of PTCL. The results can guide future precision therapy for PTCL.