Persistent high-risk human papillomavirus infection is an important precursor of cervical cancer and related cervical lesions. This single-center, randomized, assessor-blinded, parallel-group controlled trial evaluates whether dual-modality immunotherapy consisting of an oral immunomodulator plus a vaginal ovule improves HPV clearance compared with standard supportive care. A total of 76 participants will be randomized in a 1:1 ratio. The primary outcome is HPV clearance confirmed by repeat HPV testing and cervical cytology after the 3-month treatment period. Treatment adherence and adverse events will also be monitored.