The aim of the study was to find out the percentages of the contribution of mental skills in the thinking strategies of the national team players, in order to try to reach the player to the required level of mental preparation .He wanted to develop a predictive equation to calculate the degree of some thinking strategies through the mental skills of the national team players .The researcher chose (60) players of national teams ; (45) players were chosen as a basic study, and (15) players were selected as a sample for the exploratory study. Method: the researcher used descriptive approach, due to its relevance to the nature of this research. Results: mental skills are considered important in predicting the level of thinking strategies.