The present invention provides a mover assembly, a linear motor. The mover assembly includes a mover core having a first tooth portion, an inner side of the first tooth portion being configured with areceiving groove, and a first cooling pipe including a first tooth portion tube section, the first tooth portion tube section being installed in the receiving groove. According to the mover assemblyof the invention, the linear motor can greatly improve the compactness of the mover assembly, reduce the difficulty of assembly and manufacture of the mover assembly, pertinently cool the iron core teeth and windings of the mover, effectively control the temperature rise of the mover assembly and even the linear motor, and is favorable for ensuring the performance reliability and operation stability of the motor.