Illuminating pen

The invention provides an illuminating pen, which comprises a pen body. The illuminating pen is characterized in that two lamp caps with bulbs are connected with the top part of the pen body by a soft iron tube, a battery is arranged in the pen body, a switch is arranged on the pen body, the bulbs, the battery and the switch form a circuit and a wire is positioned in the soft iron tube. The illuminating pen has the advantages that the soft tube can be bent arbitrarily; when a person writes and reads, one lamp cap can be used for illuminating the writing and the other is used for illuminating a book; when the pen is not used, the lamp caps can be wound on the pen body; and the pen provides bright ray in use, and is safe and convenient.