The general character of international relationship of Southeast Asia in 2003 is that ASEAN continuing to deal with the big powers, meanwhile, ASEAN also make good use of contradiction and dispute among the big powers and develop the positive and predominance function in native area affairs. China, USA, Japan, and India are all make the greatest efforts to develop the relationship with ASEAN, China may get the highest score, and the United States is too unwilling to fall behind, Japan tries the situation of the passivity of changes, India in the positive push "face to east" policy. In 2003, the internal relation of the ASEAN appeared some unexpected obstacles, for repairing the split, the relevant nations have made many efforts.