Condyloma acuminatum is caused by infection with the human papilloma virus. The vast majority of patients with warts can be cured by traditional treatments (laser, freezing, drugs). Recurrent or new recurrences of more than 3-5 times are called recalcitrant warts, and local viral suppression therapy or photodynamic therapy is recommended to remove the latent infection that is invisible to the naked eye. Its outstanding advantages: 1, can remove the latent infection invisible to the naked eye. 2. No damage to surrounding normal tissues. 3, minimal side effects, the main discomfort is the treatment process may be some burning, stinging sensation. Photodynamic therapy, once a week, 3 times for a course of treatment, a course of treatment cure rate of up to 85%-95%, most patients only need a course of treatment, a very small number of patients need to carry out 2-3 courses of treatment.