To provide a carbon brush for electric motor with less loss due to resistance and with long service life, and an electric motor for vacuum cleaner using the same.

In the carbon brush for the electric machine including at least a carbon as a component, a conductive metal layer 1 is coated on the surface of the brush base material 3 with join characteristics to resin, all over the surface excluding its contact at the tip so as to reduce resistance as a whole of the carbon brush; a hole for mounting a lead wire is formed on the base material after coating to conduct the embedded mounting of the lead wire 4 with copper powder 5; and a nonelectrolytic plating is performed onto the conductive metal layer 1 with a thickness of 3 to 10 m. The carbon brush for the electric machine is used to constitute the electric motor for vacuum cleaner.