There are a variety of treatments for warts, but their high recurrence rate often plagues sufferers, whether it is laser, microwave, topical drugs, local injections, and even photodynamic therapy several times after there is still a recurrence, the main reasons are as follows: 1, pure physical therapy such as laser, microwave, freezing and other methods can not remove the surrounding spread of virus, the recurrence rate is high. 2, pure photodynamic therapy for warts larger, more exist poor penetration or photosensitive dose is insufficient, resulting in treatment failure or recurrence. 3, perianal, anal canal, urethra, vagina and other parts of the poor exposure, the operation is not careful to lead to virus residue and recurrence. 4, do not follow up on a regular basis can also lead to treatment failure and recurrence.