Objective To investigate clinical effect of 5-aminolevulinic acid photodynamic therapy(ALA-PDT)in the treatment of perianal condyloma acuminatum.Method ALA-PDT was used to treat 56 cases of perianal condyloma acuminatum and the curative effect was observed.Result The effectiveness rate of ALA-PDT was 94.6%.The recurrence rate was 5.4%.Conclusion The following nursing measures including care observation,adequate expansion of skin during treatment and performance of postoperative health education are all important for the enhanced curative effects of ALA-PDT in treating perianal condyloma acuminatum.