A pdl-1 antibody, pharmaceutical composition thereof and use thereof

Provided is a single-clone antibody for a programmed cell death factor 1 ligand (PDL-1) or an antigen combination segment. The single-clone antibody can be specifically combinated with the PDL-1, gets rid of the inhibition of the PDL-1 on body immunity, so that T lymphocyte is activated. Also provided are a pharmaceutical composition comprising the single-clone antibody, and uses thereof.