The age of practicing sports activity in general is one of the important problems facing those interested in the field of sports training, as each activity or sport has special requirements that are unique to it from the rest of the other games. Each individual has special abilities and preparations, and if the individual has the capabilities and preparations that are consistent with the requirements of sports activity. This helps the coach to reach the players to the highest levels of sport in addition to saving effort, time and money. The aim of the research: is to reveal the most appropriate age stage to start teaching basic skills in tennis in light of the levels of combinatorial abilities for children aged (6-9) years. The researcher used the descriptive approach (survey studies) for its suitability to the nature of this study. The research community included: Children from the age of (6 to 9) years in Assiut Governorate. And the research sample was chosen: by a random, intentional method, and it consisted of (180) children who practice tennis at the Public Service Center in the Olympic Village at Assiut University. The most important results were: First: There are significant differences between the stages (6-7) years, (7-8) years, (8-9) years in the level of performance of combinatorial abilities. Second: The age group (6-7 years) is the appropriate age to start practicing and teaching some tennis skills .