The utility model discloses a luminous pen bag, including zip fastener and one side open -ended bag body, the opening part at the bag body is made up to the zip fastener, characteristics are that theside of the bag body is provided with a plurality of LED lamps, the inboard fixed LED control circuit board that is provided with of the bag body, the LED lamp is connected with the LED control circuit board electricity, there is switch contact the both sides of zip fastener one end through leading electric wire seam system respectively, and switch contact passes through the conductive wire line and is connected with the LED control circuit board electricity, the material of the pull head of zip fastener is conducting material, the material of the chain belt of zip fastener is non -conductivematerial, when the pull head contacts with switch contact, circuit conduction, the LED lamp is luminous, the advantage is when circuit conduction, and the steerable LED lamp of LED control circuit board is sent out light shape and is become different patterns for pen bag has scientific and technological element, has increased the aesthetic feeling of pen bag simultaneously again, makes various informativeization of pen bag, and regarding the pull head of zip fastener as the switch that switches on the circuit, its easy operation is convenient.