A binding protein comprising an antigen binding domain, said binding protein capable of binding to IL-13, said antigen binding domain comprising six CDRs: CDR-H1, CDR-H2, CDR-H3, CDR-L1 , CDR-L2 and CDR-L3, wherein said six CDRs are selected from the CDR sets (a) to (f) as follows: (a) CDR-H1 is: SSWIH (residues 31-35 of SEQ ID NO: 32), CDR-H2 is: MIHPSDSETRLNQKFKD (residues 50-66 of SEQ ID NO: 32), CDR-H3 is: TATDFDY (residues 99-105 of SEQ ID NO: 32), CDR-L1 is: KSTKSLLNSDGFTYLD ( residues 24-39 of SEQ ID NO: 33), CDR-L2 is: LVSNRFS (residues 55-61 of SEQ ID NO: 33), and CDR-L3 is: FQHNYLPLT (residues 94-102 of SEQ ID NO: 33) ； (b) CDR-H1 is: TSDMGVD (residues 31-37 of SEQ ID NO: 46), CDR-H2 is: HIWWDDVKRYNPALKS (residues 52-67 of SEQ ID NO: 46), CDR-H3 is: TVSSGYIYYAMDY (residues 100 -112 of SEQ ID NO: 46), CDR-L1 is: RASQDIRNYLN (residues 24-34 of SEQ ID NO: 47), CDR-L2 is: YTSRLHS (residues 50-56 of SEQ ID NO: 47), and CDR -L3 is: QQGNTLPLT (residues 89-97 of SEQ ID NO: 47)； (c) CDR-H1 is: TSDLGVG (residues 31-37 of SEQ ID NO: 50), CDR-H2 is: HIWWDDVKRYNPALKS (residues 52-67 of SEQ ID NO: 50), CDR-H3 is: I IGSSGYIYYEMDY (residues 100-112 of SEQ ID NO: 50), CDR-L1 is: RASQDIRNYLN (residues 24-34 of SEQ ID NO: 51), CDR-L2 is: YTSRLHS (residues 50-56 of SEQ ID NO: 51), and CDR-L3 is: QQGNTLPLT (residues 89-97 of SEQ ID NO: 51)； (d) CDR-H1 is: TSDMGVD (residues 31-37 of SEQ ID NO: 80), CDR-H2 is: HIWWDDVKRYNPALKS (residues 52-67 of SEQ ID NO: 80), CDR-H3 is: TVSSGYIYYAMDY (residues 100 -112 of SEQ ID NO: 80), CDR-L1 is: RASQDIRNYLN (residues 24-34 of SEQ ID NO: 92), CDR-L2 is: YTSMKPR (residues 50-56 of SEQ ID NO: 92), and CDR -L3 is: QQGNTLPLT (residues 89-97 of SEQ ID NO: 92)； (e) CDR-H1 is: TSDMGVD (residues 31-37 of SEQ ID NO: 80), CDR-H2 is: HIWWDDVKRYNPALKS (residues 52-67 of SEQ ID NO: 80), CDR-H3 is: TVSSGY-1- YYAMDY (residues 100-112 of SEQ ID NO: 80), CDR-L1 is: RASQDIRNYLN (residues 24-34 of SEQ ID NO: 93), CDR-L2 is: YTSKLHS (residues 50-56 of SEQ ID NO
