This paper aims to provide a critical account of some selected empirical works on cross-linguistic influences in bilingual children's morpho-syntactic development. The review begins with a brief background introduction of several crucial issues in the field, then moves on to an in-depth discussion of several selected papers published within this decade, focusing on bilingual children speaking two typologically distant languages. According to this discussion, it can be concluded that findings on this topic are not completely homogeneous: majority of these studies have provided evidence for cross-linguistic transfers on bilingual children's grammar development along with several candidate explanations, including syntactic overlaps/ambiguities between bilinguals' two languages, processing competitions between the two syntactic systems in the bilinguals' brain, and language dominance effects. Nevertheless, no evidence for such influences was found in some studies, as exemplified by one in this review, suggesting that cross-linguistic influence may not be a phenomenon bound to general childhood bilingualism, but that its occurrence can be subject to a number of factors. Furthermore, both positive and negative cross-linguistic influence has been reported under different conditions, reflecting the ambivalent nature of this phenomenon, which should, therefore, be treated neutrally.