A pressurizing device includes a main body and a pressurizing mechanism having a controlling assembly and a pressing assembly arranged on the controlling assembly and movable relative to the main body. The controlling assembly has a base body arranged on the main body and a controlling member having a pivot portion and a driving portion, the pivot portion is pivoted to the base body so that the controlling member is swingable between pressurizing and releasing positions, and the pressing assembly has a controlled portion comovable with the driving portion and a pressurizing portion for pressing an object. When the controlling member swings toward the pressurizing position, the driving portion drives the controlled portion to make the pressurizing portion press the object; when the controlling member swings toward the releasing position, the driving portion drives the controlled portion to depressurize the object.