The treatments for flat warts on the neck include systemic treatment, localized treatment, physical therapy, immunotherapy and so on. 1. Systemic treatment: Thymosin, viamine ester, levamisole, dipyridamole can be used orally as appropriate, and polymyxin, transfer factor, interferon can be injected subcutaneously or intramuscularly. 2. Local treatment: 1%~5% fluorouracil cream, 0.1% vinblastine cream, 3% phthalide solution, 3% formaldehyde solution and 0.1% benzalkonium bromide solution can be applied externally. 3. Physical therapy: such as liquid nitrogen freezing, electric drying therapy, electrocautery, electrolysis or transheat therapy. 4. Immunotherapy: 2,4-DNCB acetone solution (that is, 2,4-dinitrochloropropiophenone solution) is used externally. If you have flat warts on your neck, you can’t use your own medicine, you should go to the hospital in time, and standardize the treatment under the guidance of the doctor.