A device 1a for bonding adherends T1 and T2, as a device for bonding biological tissue to biological tissue or a biological tissue bonding material, comprises: a clamping part 2a for clamping the adherends T1 and T2 between members 21a and 22a a pressing part 3a for pressing the member 22a towards the member 21a a pressure control part 4a for controlling the pressure by the pressing part 3a a heating element 5a built into the member 21a a heating control part 6a for controlling the heating by the heating element 5a a vibration generating part 7a for generating microvibration and a vibration control part 8a for controlling the microvibration generated by the vibration generating part 7a.
