The invention discloses a double air inlet heat-exchange device for a condensation type gas water heater, which comprises a casing, a condensed water collecting box, a condensation heat exchanger and a smoke collecting cover, wherein the casing is of a two-end through structure. A side wall of the condensed water collecting box is provided with a flue gas inlet, the bottom of the condensed water collecting box is provided with a condensed water outlet pipe, a condensed water baffle preventing the condensed water from flowing out of the flue gas inlet is arranged right above the inner side of the flue gas inlet, the smoke collecting cover is provided with a flue gas outlet, the condensed water collecting box is arranged in the casing, the condensation heat exchanger is arranged in the condensed water collecting box, the smoke collecting cover is buckled on the condensed water collecting box, and the condensation heat exchanger is sealed in the smoke collecting cover. The double air inlet heat-exchange device solves the problem that a heat exchanger of an existing condensation type gas water heater is low in heat exchange efficiency, the heat exchanger is corroded due to overflow of the condensed water, the content of CO in the flue gas is too high due to airflow smoothness failure, and the like. The double air inlet heat-exchange device has the advantages that the heat exchange efficiency is high, the air flow is smooth, contents of CO and NOX in the discharged flue gas are low, the overflow of the condensed water is avoided, and the double air inlet heat-exchange device is easy to manufacture.