Motor rotor core and motor rotor

The invention relates to the technical field of motors, in particular to a motor rotor core and a motor rotor. The motor rotor iron core comprises a plurality of iron core punching sheets which are stacked in the axial direction. A mounting hole is formed in each iron core punching sheet and comprises an assembling hole area and a first injection molding hole area which are communicated with each other; the assembly hole area comprises a first assembly edge and a second assembly edge which are opposite to each other, a plurality of convex teeth at intervals are formed along the first assembly edge, and each convex tooth comprises a convex surface facing the second assembly edge; the mounting holes of the iron core punching sheet are axially stacked and run through to form a mounting groove, and the mounting groove comprises an assembling groove area formed by axially stacking and running through assembling hole areas and a first injection molding groove area formed by axially stacking and running through firs