The present essay critically analyzes Leibniz’s ideas on the nature of time and space, his reasons to annul the absolute time and space, and on how the acceptance of the absolute motion and redundancy of space could be gathered.To this end Leibniz’s communications with Clarke, Debs, Huygens, Arneau, as well as the works of his expositors such as Russell, Latta, Ishiguro have been studied through descriptive and analytical methods, and issues concerning time and space have been critically analyzed with the following results:1.The final idea of Leibniz is that space, redundancy and order of objects co-exist, and time is the order of consecutive events, and this idea requires time to consist of aggregation of moments and space to consist of Collection of points, therefore, Leibniz’s idea can not be accepted. 2. Leibniz well annuls the absolute time and space of Newton with a reason well-founded on the principle of sufficient reason; however, annulment of Newton’s theory does not mean that Leibniz’s theory is proved, because the axiom is not only established between two probabilities. 3. Apart from self-contradiction, Leibniz accepts the absolute motion against relative motion on the one hand, and denies the absolute space on the other.