The present invention provides a fully human antibody specifically inhibiting Connexin 26, characterized in that it is a recombinant immunoglobulin having the structure of scFv-Fc, wherein scFv refers to a single-chain antibody comprising a heavy chain variable region and a light chain variable region, the amino acid sequence of the heavy chain variable region is SEQ ID NO: 1, the amino acid sequence of the light chain variable region is SEQ ID NO: 2, and Fc refers to constant region. The present invention uses the first 41-56 amino acid sequence of extracellular region of Connexin26 as an antigen, the sequence thereof is KEVWGDEQADFVCNTL. Through the biochemical analysis and immunofluorescence identification of the antibody obtained by single-chain antibody phage display library and screening technology, it was confirmed that the antibody provided by the present invention could specifically recognize Connexin 26 and inhibit its hemichannel activity. Animal experiments show that this antibody significantly inhibits the hemichannel activity of mouse cochlear tissue sections. Therefore, the antibody can be used in the treatment of Connexin mutation associated diseases.
