The invention discloses a measuring system for interface heating power coupling heat transfer coefficients, which comprises a clamping device, a reinforced device, a weight, a heating device and a measuring device, wherein the clamping device comprises heating chucks I and II for installing a test sample to be measured, and clamping surfaces of the two chucks are arranged opposite to each other; the reinforced device comprises a hydraulic reinforced mechanism and a pulley reinforced mechanism and is used for providing pressure for the test sample to be measured; the heating device is used fortransferring heat to the heating chunks I and II; and the measuring device comprises a test sample temperature measuring probe, mutual inductors I and II and a recording analytical instrument. Simultaneously, the invention also discloses a measuring method for the interface heating power coupling heat transfer coefficients. In the system and the method for the interface heating power coupling heat transfer coefficients, output pressure can be amplified by adjusting the reinforced times of two-stage reinforced mechanisms, namely the pulley reinforced mechanism and the hydraulic reinforced mechanism according to requirements, so the measuring requirements of the heat transfer coefficients of contact interfaces can be met under the conditions of different materials, pressures and contact surfaces.