Recombinant PD-1 humanized monoclonal antibody injection (company code: GB226) is joint developed by Genor Biopharma Co. Ltd and Crown Bioscience,Inc., it is the reorganization of deoxyribonucleic acid (DNA) technology in the Chinese hamster ovary (CHO) cells express system expressed in a IgG4 kappa type single resistance to predominate. GB226 had the different new amino acid sequence and molecular structure compared with two marketed PD-1 monoclonal antibody injection and got the approval of CFDA for clinical trial.Pharmaceutical research indicated GB226 cell strain had security source, production process is stable, quality can control, preparation stability, has good compatibility with packaging materials, it has the condition of industrialization, can prepare investigational medicinal product with safety, effective, and controlled quality for clinical research.Pharmacodynamics study show the targets and mechanisms of GB226 is clear, tumor suppression effect is obvious.Toxicology studies show this product in high doses with low toxic, and the toxic is reversible, the most common toxicity is specific to the drug action mechanism.