Abstract: Provided is a method for regulating a thermal boundary conductance between a metal and an insulator, including: arranging a metal on a surface of an insulator, a contact surface between the metal and the insulator being a boundary between the metal and the insulator; and the insulator including a ferroelectric, a piezoelectric, or a pyroelectric; applying an external electric field or stress to the ferroelectric, and adjusting a magnitude of the external electric field or stress, or an included angle between a direction of the external electric field or stress with the boundary to regulate the thermal boundary conductance; or applying a stress to the piezoelectric, and adjusting a magnitude of the stress, or an included angle between a direction of the stress with the boundary to regulate the thermal boundary conductancer; or adjusting a temperature of the pyroelectric to regulate the thermal boundary conductance.