Multifunctional elastic light-emitting pen sleeve

The utility model relates to a multifunctional elastic light-emitting pen sleeve. The multifunctional elastic light-emitting pen sleeve comprises an LED lamp, a lower pen sleeve, an upper pen sleeve, a pen body battery box and a square base. The LED lamp is connected with the lower pen sleeve, a lamp switch is arranged on the lower pen sleeve, the upper pen sleeve is connected with the pen body battery box, power is supplied to the LED lamp through a lead wire, and the upper pen sleeve is further connected with the square base through a USB. The lower pen sleeve and the upper pen sleeve are made of elastic rubber materials and are suitable for various common pens different in thickness. The multifunctional elastic light-emitting pen sleeve has the advantages that power is continuously supplied to a light-emitting pen through an external power supply, the illumination time can be prolonged, the power can be also supplied by the power supply arranged on the pen, writing at night is facilitated, and an illumination function can be added for the common pens.