Neutropenia is a common clinical complication of chemotherapy in cancer patients. It is an important factor that delays the course of standard treatments in patients. Recombinant human granulocyte colony-stimulating factor (rhG-CSF) is an effective drug for the treatment of chemotherapy-induced neutropenia. However, for patients with neutropenia, multiple rhG-CSF treatments are usually required. This is likely to extend the antitumor treatment period and increase physical and mental stress in patients. Pegylated recombinant human granulocyte colony-stimulating factor (PEG-rhG-CSF) is rhG-CSF chemically modified by a single methoxy polyethylene glycol group; it is able to alleviate neutropenia with a single dose. The aim of the present study was to determine the safety and effectiveness of preventive treatment with pegylated recombinant human granulocyte colony stimulating factor (PEG-rhG-CSF) on concurrent chemotherapy-induced neutropenia and to provide a rational basis for its clinical application. Therefore, the investigators designed the multi-center, open-label,randomized controlled clinical study and aimed to compare the efficacy and safety between PEG-rhG-CSF and rhG-CSF in non-Hodgkin lymphoma receiving chemotherapy.