Three metal-containing ionic liquids were successfully prepared from the reaction between choline chloride and metal chloride at various ratios. The resulting products are viscous liquids at room temperature and are miscible with water but immiscible in low polar organic solvents. The obtained MCILs show good conductivities in the range from 411 to 791 μS/cm at 57.1 °C. With metal chloride acting as Lewis acid in the component, these ionic liquids could be used as a catalyst in various organic reactions such as Friedel-Crafts alkylation.