Appearing and existing in all areas of communicating, the act of questioning is considered a universal phenomenon in language as well as in human life. This is a multifaceted, complex but appealing act because it not only reflects "the unknown things", "the fuzzy ones", but also presents the depth of culture, psychology and custom of the language community. Studying the act of questioning in communication between Vietnamese intellectual spouses, the authors expect to partly demonstrate this point of view.