[Problem] To provide an anti-human Tie2 antibody which prevents or treats diabetic macular edema, diabetic retinopathy, or critical limb ischaemia by binding to human Tie2 and activating human Tie2. [Solution] The inventors of the present invention studied anti-human Tie2 antibodies and have provided an anti-human Tie2 antibody including four heavy chain variable regions and four light chain variable regions. The heavy chain variable regions comprise an amino acid sequence from amino acid no. 1 to 122 of SEQ ID NO:2, and the light chain variable regions comprise an amino acid sequence from amino acid no. 1 to 113 of SEQ ID NO:4. One of the heavy chain variable regions and one of the light chain variable regions constitute one antigen-binding site, and the antibody includes four antigen-binding sites.
