By referring to the SPA theory, multiple attribute decision making problem with interval numbers are transformed into three-unit- connection-number-based one. Based on the traditional technique for order preference by similarity to ideal solution (TOPSIS), SPA-TOPSIS method for solving the multiple attribute decision making problems with interval numbers is proposed. This method is brief and can be performed on computer easily. It can avoid comparing and ranking interval numbers. Finally, an illustrative example is also given to demonstrate the feasibility and practicability of the proposed method.