Scissor blade and electric scissors

The shear blade comprises an upper blade body and a lower blade body which are hinged to each other, one end of the upper blade body and one end of the lower blade body are an upper shear head and a lower shear head respectively, and the upper shear head moves back and forth between the two sides of the lower shear head to conduct mutual shearing. The lower scissor head is provided with at least one U-shaped or V-shaped lower cutter groove, and the lower cutter groove comprises two lower cutter blades; when the number of the lower cutter grooves is more than two, the adjacent lower cutter grooves share one lower cutter blade, the upper scissor head is provided with U-shaped or V-shaped upper cutter grooves, and the number of the upper cutter grooves is one less than that of the lower cutter grooves; the upper cutter groove comprises two upper cutter blades; when the number of the lower cutter groove is one, the upper scissor head is provided with an upper cutter blade. The utility model further discloses the