Objective: It is generally recommended that the first suckling of newborn babies begin within the first hour after birth to assure continuous lactation, and alleviate the mother's pain after Caesarian birth. The aim of this research is to define the effect of mother's nursing, regarding onset and continuation of lactation, on pain after surgical operation.Methods: We used a case-control method in this prospective research. Forty pregnant women, candidates for Caesarian deliveries, had general anesthesia, ASA Class I-II. The surgeon injected twenty patients in the study group under the skin with 10 ml 1.5% Lidocaine after repair of the stomach muscular wal . This injection was not given in the control group. Following surgery the rate of nausea, vomiting, and intensity of post operational pain were studied by the VAS method. Also, the time of lactation onset was recorded. Results: Cases in the group study were similar from the viewpoint of demographic specifications, number of pregnancies, and type of incisions. Post-operational nausea, vomiting, and pain intensity and time between operation and lactation onset, showed a meaningful difference, From the viewpoint of pain intensity at the point of incision and lactation, there was a meaningful difference that means the injection of Lidocaine under the skin caused a decrease of pain in the study group in comparison to the case control group. Conclusion: Although it is obvious in this study that the Lidocaine injection has no effect on decreasing nausea, vomiting, or post-surgical pain, the decrease in pain that occurs at the incisional point accelerates the onset of suckling and results in continuous lactation.