There are few studies about the effect of TENS in visceral pain in the literature. We performed a randomized, double-blinded and placebo-controlled study to analyze if TENS reduces postoperative visceral pain after tubal sterilization surgery. 60 women were divided in three groups (High Frequency TENS-HFT 100 Hz; Low Frequency TENS-LFT 4Hz, or Placebo TENS). TENS was applied next to umbilical cicatrice for 30 minutes immediately in the postoperative period when the patients arrived in the post anesthesia care unit (PACU). A numerical scale (10 cm) and the Brazilian version of the McGill Pain Questionnaire (Br-MPQ) were used to measure postoperative pain intensity before and after TENS application. Length of stay in the PACU was also measured. Data were analyzed through Kruskal Walis, Wilcoxon Matched Pairs and Post Hoc Tukey Tests. Data with p values <0.05 were considered statistically significant. Postoperative pain intensity was reduced after application of either high and low frequency TENS when compared to placebo TENS (p=0.001) for the numerical rating scale and the Pain Rating Index of the Br-MPQ. The descriptors selected by the subjects were colic (100% report), frightful and troublesome. The patients selected equal proportions of descriptors between sensory and affective categories in all groups (p=0.002). Moreover, HFT group presented shorter stay in the PACU (p<0.05). The majority of the patients in all groups (90 to 100%) reported that the TENS was comfortable and they would use TENS again in another surgical procedure. This study suggests that both high and low frequency TENS reduce postoperative visceral pain after tubal sterilization procedure when this method is combined to analgesic drugs in the postoperative period.