The growth of warts after photodynamic therapy is directly related to the size and number of warts, as well as the physical condition of the individual. 1. large lesion area: if the warts area is relatively large, after the use of photodynamic removal of warts, relatively than the area of small lesions recurrence rate is higher, there may also be incomplete treatment. 2. quantity: the number of acromegaly is higher than the number of recurrence is also higher, photodynamic treatment acromegaly can only remove warts, can not completely control the recurrence. 3. Physique: Due to the existence of individual differences, the body resistance and immunity is insufficient, resulting in photodynamic treatment of acromegaly after the growth of the possibility is also relatively large.