The purpose of this study was to construct computer program of adaptability test on the service of table tennis. It is based on the item response theory to calculate a complete score table. A measure and standard error is estimated for every possible score on a test composed of all non-exterme item included in the analysis. The model set of computer program of test included: input base data, test administration, query, and printing, on the construction computer program of adaptability test. this study was only description and discussion for the main program of model set in the testing. The evidence of the results were that the computer program of adaptability test of table tennis service was found satisfactory.