Based on the postulates of Carlo Ginzburg and Luis González y González, this article aims to review the concept of micro-history, investigating the consistency of three current conceptions about it. The third and most important one is the approximation between the historiographical and fictional narratives, based on a (supposed) common rhetorical dimension, of which certain historians, markedly from the 1980s, became partisans. In this sense, one sets out to verify whether the expressive nature of micro-history also reflects such trend, in the light of the works of two of its most notable proponents. By Ginzburg, the article will focus on Relações de força (2000) and O fioo e os rastros (2007), and, by González y González, Otra invitación a la microhistoria (1985). As a corollary of this reflection, one seeks to assess whether micro-history, when questioning certain fundaments of traditional historiography, modifies the commitment to truth and proof/evidence, engines of historical knowledge.