After the University Ethics Committeea approval in a randomized clinical trial 60 pregnant women candidate elective cesarean section with ASA class 1 or 2 included in the study and randomly in two groups of sufentanil with bupivacain and bupivacain alone. Patients with a history of coagulopathy, lack of consent to perform the spinal anesthesia, infection, history of anesthesia ,migraine headaches, seizures, severe preeclampsia, eclampsia, a history of low back pain and any mass in the CNS are excluded. Before induction of spinal anesthesia the objective of research and telecommunication follow up with patients were described as well as how to express the pain VAS by the criteria as well as to educate them. Before performing spinal anesthesia ,patiants consent were collected and in both groups 500 cc venous fluid were infused and bood pressure, pulse oximetry heart rate were monitored. In both groups, spinal anesthesia were in sitting position in L4-L5 space with spinal Quinke needle (25 G * 90mm). in one group 12.5 mg of bupivacain injected and in other group 12.5 mg of cell bupivacain with 5 µg sufentil were injected. in the check list information of patients and phone numbers for follow up added. And up to a week the phone call will performed . patients were admitted for three days and headache occurance were evaluted,and if any headache recorded the severity of the headaches in order to VAS added(VAS zero means completely without the headache and headache imaginable ten VAS is the strongest). In the case of mild and moderate headache patient support measures recommended in the event of a severe headache that disrupt the patians daily activities recomended to return to hospital and epidural blood patch were performed by the executive producer. Finally the information collected by the software Stata11 processed and the analysis of the case performed.