Objective: To investigate the effect of lidocaine in paracervical block in women undergoing colposcopy and cervical biopsy.Methods: This a triple-blind randomized controlled trial (July-September 2020) was conducted on women who were candidate for the colposcopy and cervical biopsy with American Society of Anesthesiologists classification Class I or II. They were randomly allocated to receive a single dose of lidocaine hydrochloride 2% or injectable sodium chloride 0.9% paracervical block, and then, cervical biopsy was done. The pain score was asked and intra-procedural and 5-minutes post-procedural in both groups, using the VAS tool. Also, patients' satisfaction after the procedure and complications were recorded.Results: Totally, 74 patients (37 in each groups) were enrolled, with the mean±SD age of 35.91±8.10 years. The mean±SD of pain score intra-procedural was statistically higher in patients in the treatment group (0.92±1.53 vs. 2.73±2.34, P<0.001), as well the pain score 5-minutes post-procedural (0.27±0.65 vs. 0.95±1.15, P=0.003). Also, the mean±SD of patients' satisfaction score was higher in the treatment group (4.65±0.82 vs. 4.05±1.41, P=0.03). Dizziness were observed only in the treatment group, statistically (P<0.001).Conclusion: Paracervical block using lidocaine could reduce the intra-procedural and 5-minutes post-procedural pain. Also, it can increase the patients' satisfaction with the procedure.