A construction machine includes an engine disposed in an engine room, a heat exchanger disposed in the engine room, an air intake passage configured to provide a communication between the interior and the exterior of the engine room, and a cooling fan disposed in the engine room. The cooling fan is configured to draw external air into the engine room through the air intake passage by rotation thereof, and to flow the external air for allowing the external air to pass the heat exchanger. The heat exchanger has an air intake surface formed on a side portion thereof. The air intake surface is a surface configured to receive airflow to be drawn into the heat exchanger. The air intake passage is configured to flow the external air drawn to the air intake passage along a route passing a position over the heat exchanger and reaching the air intake surface.