The invention discloses a novel concrete water-based release agent applied to aluminum alloy templates. The release agent is composited from range hood gas condensate, an emulsifier, sodium alcohol ether sulfate, a dispersant, a rust inhibitor, a preservative, a thickening agent and water as main raw materials. The involved preparation process is simple and convenient to operate, raw materials arewidely sourced, synthesis temperature is low, and significant economic and environmental benefits are achieved; the obtained water-based release agent has good release performance and good applicability to aluminum alloy templates and cannot corrode a mold, released concrete has smooth and flat concrete surface without large bubbles, less concrete is adhered to the mold, and the release agent issuitable for popularization and application.