46 cases of tubal reanastomosis are examined in this article. At the time of sterilization the average age of patients was 28, and average parity 2.7; 75% of them had asked sterilization for purely economic reasons; it had been performed for medical reasons only in 7 cases. Timing of sterilization was in most cases postabortion, or post cesarean section. Techniques used were tubal excision in 58% of cases, and tubal ligation; in 15 cases irreversible techniques had been employed. Demand for tubal reanastomosis occurred an average 5 years after sterilization; 18 patients were not operable. Such a great demand for reversal of sterilization clearly shows that indications for sterilization must be well thought, and that well established reasons for it must be found and thoroughly discussed beforehand. Conservative techniques of sterilization must be used whenever possible, especially those destroying the least possible portion of the tube, to give an eventual reanastomosis as many chances of success as possible.