An isolated antibody that binds to human interleukin 6 (IL6), comprising: (a) a heavy chain variable region (VH), which comprises a heavy chain complementarity determining region 1 (HC CDR1) of SEQ ID NO: 2, a heavy chain complementarity determining region 2 (HC CDR2) of SEQ ID NO: 4 and a heavy chain complementarity determining region 3 (HC CDR3) of SEQ ID NO: 6； and a variable region of the light chain (VL), which comprises a determining region of complementarity 1 of the light chain (LC CDR1) of SEQ ID NO: 9, a determining region of complementarity 2 of the light chain (LC CDR2) of SEQ ID NO: 11 and a complementarity determining region 3 of the light chain (LC CDR3) of SEQ ID NO: 13； (b) a heavy chain variable region (VH), comprising a complementarity determining region 1 of the heavy chain (HC CDR1) of SEQ ID NO: 2, a complementarity determining region 2 of the heavy chain (HC CDR2 ) of SEQ ID NO: 4 and a complementarity determining region 3 of the heavy chain (HC CDR3) of SEQ ID NO: 6； and a variable region of the light chain (VL), which comprises a determining region of complementarity 1 of the light chain (LC CDR1) of SEQ ID NO: 9, a determining region of complementarity 2 of the light chain (LC CDR2) of SEQ ID NO: 11 and a complementarity determining region 3 of the light chain (LC CDR3) of SEQ ID NO: 15； or (c) a variable region of the heavy chain (VH), which comprises a determining region of complementarity 1 of the heavy chain (HC CDR1) of SEQ ID NO: 2, a determining region of complementarity 2 of the heavy chain (HC CDR2) of SEQ ID NO: 4 and a complementarity determining region 3 of the heavy chain (HC CDR3) of SEQ ID NO: 16； and a variable region of the light chain (VL), which comprises a determining region of complementarity 1 of the light chain (LC CDR1) of SEQ ID NO: 9, a determining region of complementarity 2 of the light chain (LC CDR2) of SEQ ID NO: 11 and a complementarity determining region 3 of the light chain (LC CDR3) of SEQ ID NO: 15.Un ant
