MiRNA-106a (miR-106a), a member of the miR-17 family, has been validated to be aberrantly regulated in the diversity of tumors. The purpose of this review is supposed to deliver an intricate overview of miR-106a, including its role in cell proliferation, apoptosis, cell cycle, invasion and metastasis, involvement in drug resistance as well as its interactions with the target proteins and signaling pathways involved.