This invention relates to a brewing mechanism having liquid activation function, comprising a container and a functioning unit disposed below the container, wherein the container is communicated with the functioning unit; the functioning unit comprises a pressure zone and an exporting zone; the pressure zone is communicated with the container and smaller than the container, and is disposed with air vents for introducing air; and the exporting zone is communicated with the pressure zone, so as to enable the brewed liquid (for example, coffee liquid formed by brewing coffee powder with hot water) in the container to flow into the pressure zone, and apply a preset pressure to the brewed liquid through the air vents. Accordingly, the container and the functioning unit can form the Venturi tube effect to make the brewed liquid generate pressure difference and faster flow speed, thereby activating and refining the molecules of the brewed liquid in order to provide a more soothing taste to the throat.