The current revival of interest in studying learning strategies is based on a long standing premise that our schools should help students learn to successfully control their cognitive processes, includind learning to learn, to remember, and to think. The purpose of this study was to provide a theoretical review of the developmental trends of learning strategies, with special focus on cognitive issues. First, the study presented cognitive informational processing approach to learning strategy. Second, the study classified learning strategies into two types and discussed with special emphasis on developmental trends of each type. Attentional strategy, rehearsal strategy, elaboration strategy, organizational strategy, and affective strategy focused on information processing ability of learner. And metacognitive evaluation, planning, and regulation of thinking skills concentrated on metacognitive ability Third, the study briefly reviewed learning strategy training programms. Finally, the study concluded with a discussion of educational implication for schooling.