MXene is emerging as a very promising electrode material of high-performance micro-supercapacitors (MSCs) for microscale electronics. However, MXene based MSCs (M-MSCs) reported so far represent low areal (≤ 10 μWh cm-2) and volumetric (≤ 20 mWh cm-3) energy densities due to its narrow working voltage in aqueous system (0.6-1.0 V). Herein, we first reported the construction of high-voltage and high-energy flexible ionogel-based M-MSCs with interdigital microelectrodes of ionic liquid pre-intercalated MXene films. Benefitting from the pre-intercalation of ionic liquid, the as-fabricated M-MSCs, working at 3 V in 1-butyl-3-methylimidazolium tetrafluoroborate (EMIMBF4), exhibited high areal and volumetric energy density of 13.9 μWh cm-2 and 43.7 mWh cm-3, respectively, both of which are the highest values of the reported M-MSCs. Moreover, all-solid-state M-MSCs using ionogel electrolyte displayed exceptional flexibility without capacitance loss under various deformation, and seamless integration free of metal-based interconnection for boosting voltage output. Therefore, such high-energy M-MSCs hold great potential for direct integration of flexible and miniature electronics.