Test pencil

The utility model discloses a test pencil. The test pencil comprises a probe, a test pencil main body, a cover cap, and a lower lamp tube cap, a transparent lamp tube, a neon lamp, a safety resistor and an upper lamp tube cap which are successively installed in the test pencil main body, and is characterized in that the test pencil main body is composed of three portions, i.e., an upper pencil body, a middle pencil body and a lower pencil body, the middle pencil body is made of a transparent material and is opposite to the neon lamp in terms of positions, the middle pencil body, after primary injection molding, is subjected to secondary injection molding with the upper pencil body and the lower pencil body, and projections or recessed holes are arranged at the outer circles of the connection positions between the middle pencil body after the primary injection molding and the upper pencil body and the lower pencil body; and the lower pencil body is provided with a bottom extension which wraps the probe, the exposure length of the probe is not larger than 2 cm, and the probe and the lower pencil body are injection-molded together. The test pencil is novel in structure and beautiful in profile, reduces the cost and has a good anti-probe-rotation capability at the same time.