Rail transit window glass capable of being manually and forcibly heated

The utility model discloses rail transit window glass capable of being manually and forcibly heated. The heating loop comprises a heating element, a first electric connector and a heating power supply which are connected in series; the control loop is connected with the heating loop through a contactor and comprises a temperature controller, a second electric connector, a multi-gear switch and a control power supply, and the heating element and the temperature controller are installed on window glass; the multi-gear switch is provided with an automatic heating position and a manual forced heating position; the automatic heating position is connected in series with the second electric connector and the temperature controller; the manual forced heating position is connected in series with a control power supply. The automatic temperature control mode of the window glass can be started, the heating on-off is automatically controlled according to the temperature of the glass, and in the automatic temperature cont