Children’s neck warts with viral infection, autologous inoculation infection, indirect contact infection and other factors, specific analysis is as follows: 1. Viral infection: neck warts belong to the viral infection skin disease, and cause this virus is mainly human papillomavirus, especially the human body resistance is poor, it happens to be localized skin damage, it will be easy to grow warts. 2. autologous inoculation infection: children in other locations of this disease, through the hand touch the local pathogenic virus, thus spreading the infection of the body of a phenomenon, such as arm warts, scratching with the hand easy to cause breakage, resulting in the fingernails contaminated with the virus, and then contact with the neck area, will lead to the neck of the long warts. 3. Indirect contact infection: usually children and warts patients live together and have close contact, can also lead to the spread of human papillomavirus and caused by the neck and other parts of the warts. There may be other reasons for children to have warts on their necks, so it is advisable to go to the hospital in time to avoid serious consequences.