The purpose of the study was to develop soccer league participation motivation inventory. The preparation of this Scales is using the test on statistics of item analysis and factor analysis from pretest data to establish the construct validity of the sacles. As to the analysis on the reliability, the Cronabach's α of Summated Scales and cofficient reach 0.9362, and Cronabach. α range from 0.8018 to 0.9169, it shows that there is quite reliable principle in consistency and stability of this scales which indeed could provide reference to measuring the soccer league partici-pation motivation.