Disclosed herein is an antibody-containing solutionformulation comprising a sugar and a surfactant asstabilizers. The sugar is sucrose or trehalose, whereasthe surfactant is Polysorbate 80 or 20. The antibody tobe stabilized with the solution formulation is ahumanized anti-interleukin-6 receptor antibody hPM-1 orthe anti-HM1.24 antibody. The solution formulationprevents antibody multimer molecule formation induced bylight.