For the analyses of the effects of the the 34th General Assembly and Associate Meeting of ABU at Seoul, there are useful methods, i.e. multiplier theory and Regional Input-output analysis. The Seoul Regional Input-Output table was calculated from the National Input-Output Table of Korea(26×26 Sector Tables) by the Location Quotient Approach. The Calculating formula used the above approach is as follow: A^r=Q ·A_n The Calculating formula of the Inverse Matrix Coefficients is as follow" X = (I - A)^-1 (Y - M) The Calculating formula of the Value Added Requirement coefficients is as follow: A⌒^v(I - A^d)^-1 The Calculating formula of Employment Coefficients is as follow : L(I - A)^-1 Results of the Input-Output analysis were as follows ; 1. Production induced effect was about 5,759 million won. 2. Value added effect was about 3,575 million won. 3. Employment increasing effect was about 606.6456 people per 1,000 million won.