A dry block temperature calibrator capable of air flow guiding and heat dissipating, comprising: a housing and a housing base; a furnace body disposed in the housing; at least one air flow generating device disposed between the housing and the furnace body, and configured to generate an air flow to be blown toward a handle of a device to be tested that remains out of the furnace body when the device to be tested is inserted into the furnace body for calibration; and a cooling fan disposed in the housing and below the furnace body, wherein the air flow generating device comprises: one or more gas passages C2 provided at a bottom end thereof with an air inlet configured to be in fluid communication with the cooling fan or an external gas source. and at a top end thereof with an air outlet directed toward the handle of the device to be tested, and configured to guide the air flow from the air inlet to the handle of the device to be tested; characterised in that the air flow generating device further comprises a fan for flow guiding that is provided inside the gas passage C2, wherein the fan for flow guiding and the gas passage are configured to generate the air flow directed toward the air outlet of the gas passage, wherein the dry block temperature calibrator further comprises a control board bracket for installing a control board, a mounting plate is mechanically fixed on a top end of the control board bracket, the fan for flow guiding being mounted on the mounting plate, and a bottom end of the control board bracket is fixed on the housing base of the dry block temperature calibrator. a housing and a housing base; a furnace body disposed in the housing; at least one air flow generating device disposed between the housing and the furnace body, and configured to generate an air flow to be blown toward a handle of a device to be tested that remains out of the furnace body when the device to be tested is inserted into the furnace body for calibration; and a cooling fan disposed in the housing and below the furnace body, wherein the air flow generating device comprises: one or more gas passages C2 provided at a bottom end thereof with an air inlet configured to be in fluid communication with the cooling fan or an external gas source. and at a top end thereof with an air outlet directed toward the handle of the device to be tested, and configured to guide the air flow from the air inlet to the handle of the device to be tested; characterised in that the air flow generating device further comprises a fan for flow guiding that is provided inside the gas passage C2, wherein the fan for flow guiding and the gas passage are configured to generate the air flow directed toward the air outlet of the gas passage, wherein the dry block temperature calibrator further comprises a control board bracket for installing a control board, a mounting plate is mechanically fixed on a top end of the control board bracket, the fan for flow guiding being mounted on the mounting plate, and a bottom end of the control board bracket is fixed on the housing base of the dry block temperature calibrator. one or more gas passages C2 provided at a bottom end thereof with an air inlet configured to be in fluid communication with the cooling fan or an external gas source. and at a top end thereof with an air outlet directed toward the handle of the device to be tested, and configured to guide the air flow from the air inlet to the handle of the device to be tested; characterised in that the air flow generating device further comprises a fan for flow guiding that is provided inside the gas passage C2, wherein the fan for flow guiding and the gas passage are configured to generate the air flow directed toward the air outlet of the gas passage, wherein the dry block temperature calibrator further comprises a control board bracket for installing a control board, a mounting plate is mechanically fixed on a top end of the control board bracket, the fan for flow guiding being mounted on the mounting plate, and a bottom end of the control board bracket is fixed on the housing base of the dry block temperature calibrator.