Concentrated on Jacques Derrida's famous Jerusalem Lecture "How to Avoid Speaking: Denials", this paper discusses "negative theology" from three perspectives. Firstly, "negative theology" is defined; it holds that the classical tradition of "negative theology" predicts the negations of our modem society. Secondly, it gives a further study to the three ways of how to avoid speaking cited by Derrida, i.e., Plato in the Greek tradition, Pseudo-Dionysius in Christian tradition, and Heidegger in neither of the above. Finally, it investigates the inner links between deconstruction and negative theology, as Derrida put it, he would no longer take Christian Baptism as the only structural paradigm of negative theology, for the deep structure of the latter is far more extensive. So like "trace", "complement" and any of other typical deconstructive terms, it is possible to conceive "negative theology" as a universal strategy of the formation and interpretation of the text, so long Derrida shall be true that nothing is outside text.