Warts on the hand is often due to human papilloma virus infection caused by common warts, which is due to the patient’s low immunity, local skin trauma, hand often stimulation and other reasons, need to be analyzed. 1. low immunity: when the patient due to long-term late night, high pressure, emotional instability will lead to low immunity, in the body of the parasitic human papillomavirus reproduction proliferation, thus leading to the hands of common warts. 2. local skin trauma: when the patient’s local skin is damaged, the human papilloma virus will invade the body through the skin damage, infected skin epidermal cells, resulting in the symptoms of common warts. 3. the hand is stimulated: the patient hand long time in the water immersion or long-term engaged in meat processing, the hand is often scratched and other stimuli, easy to increase the risk of viral infection, improve the chance of warts. The patient should go to the hospital in time, in the doctor’s help to clarify the cause of the disease, for targeted treatment or treatment.