The present disclosure is directed to an electron source and an X-ray sourceusing thesame. The electron source of the present invention comprises: at least twoelectronemission zones, each of which comprises a plurality of micro electron emissionunits,wherein the micro electron emission unit comprises: a base layer, aninsulating layer onthe base layer, a grid layer on the insulating layer, an opening in the gridlayer, and anelectron emitter that is fixed at the base layer and corresponds to a positionof the opening,wherein the micro electron emission units in the same electron emission zoneareelectrically connected and simultaneously emit electrons or do not emitelectrons at thesame time, and wherein different electron emission zones are electricallypartitioned.
