The invention belongs to the field of doors/windows and particularly relates to a ventilation window with a temperature control function, comprising a window body which is provided with a rectangularventilation passage having the penetrated inside and outside; the upper wall of the middle of the rectangular ventilation passage is provided with a slideway; the top wall of the slideway is fixedly connected with an electromagnetic plate; a ferromagnetic piston block is slidably and hermetically connected inside the slideway and is provided with a pressure stabilizing hole running through the topand bottom of the same; a transparent tube in vertical arrangement is embedded in the inner wall of the window body and is vacuumized; the transparent tube is filled with liquid mercury; the lower end of the transparent tube is electrically connected with the electromagnetic plate through a connector; the upper end of the transparent tube is in through connection with a conductive tube; an independent power source is arranged in the window body; two electrodes of the independent power source are coupled to the conductive tube and the electromagnetic plate respectively. The ventilation windowallows the temperature to be set freely; when temperature in a bathroom is too high, the ventilation passage can be automatically opened to dissipate heat.