The invention discloses an office desk with a humidification function. The office desk comprises a desktop, wherein support legs are arranged at the lower side of one end of the desktop; a placing cabinet used for supporting the desktop is arranged at the other end of the desktop; a separation plate is also arranged on the desktop; the upper end of the inside of the placing cabinet is provided with a water tank; a water inlet pipe and a water discharging pipe are arranged on the water tank; a control valve is arranged on the water inlet pipe and the water discharging pipe; a steam outlet pipe is also arranged on the water discharging pipe; the steam outlet pipe penetrates through the desktop to be connected with a steam outlet arranged on the separation plate; an electric heater is arranged in the water tank; the humidification device and the office desk are combined; the area of an office room is saved; the air humidification effect is achieved; in addition, the water is evaporated in a mode of heating water by an electric heater, so that the temperature of the office room is improved; the use of an air conditioner is reduced; the electric energy is saved.