The patients diagnosed with relapsed/refractory or advanced NK/T-cell Lymphoma (r/r NKTCL) were selected as the research objects. To explore effective and safe treatment for advanced or r/r NKTCL, the combination of PI3K-δ inhibitor Linperlisib with PD-1 blockade Camrelizumab and anti-metabolic agent Pegaspargase was applied for the treatment.