This study seeks the problem of the Korean Professional Basketball that depends on foreign players after having the merits of foreign and domestic players after having the merits of foreign and domestic players divided and analyzed in the end of 5 years` history of the league. Moreover, this investigation is to provide basic materials for the development of the Korean Basketball and it performance. 14 items in total including 9 attack and 5 defense factors are the object to measure. The following result is applied to individual group t-test and Perason`s product moment correlation coefficient (r) is conducted to analyze correlation between each change factors by factors. Therefore, the results are as written below: First, there were some differences between domestic and foreign players in attempt to 2 points shot and success, attempt 3 points shot and success, offensive rebound (OR), defensive rebound (DR), block shot (BS). However, foreign players recorded high frequency in attempt to 2 points shot and success, OR, DR and BS than domestic player. On the other hand, domestic players showed high frequency in attempt 3 points shot and success and Assist. Second, in the result of Correlation Analysis, meaningful correlation was shown in every factor except for attempt to 3 points shot and success to foreign players. However, domestic players showed meaningless correlation in OR, DR, BS, Good defense and Assist. Therefore, domestic players shall control rash attempt 3 points shot and exercise correct shooting to increase the success percentage. In addition, it requires much effort and training to perform Fast Break (FB) and Assist with speed. Foreign players shall watch for 2 points field goal by using post play under the basket for the victory of their team and good results and give priority to rebound through box out.