A new V4+-based selenite compound Na6V7(SeO3)8O6F6 was synthesized by the hydrothermal method, exhibiting a rare S = 1/2 stacked kagomé lattice built by corner-sharing VO6 zigzag chains along the c-axis, while face-shared VF6 linear chains are located inside the hexagonal channels. Magnetic measurements indicate that this compound possesses two successive ferromagnetic transitions at low temperature.