A method is proposed for interval multi-attribute decision-making, in which the attribute values are in the form
of interval numbers. The central decision making matrix is defined. Then, the general importance measurement of experts is derived through the similarity of two standardized decision making matrix. By using it, the equal reliability degree for alternatives is obtained. Furthermore, the alternatives are ranked by using the equal reliability degree. Finally, an illustrative numerical example shows the feasibility and effectiveness of the proposed method.