A Randomised Control Trial to evaluate the efficacy of Acupuncture and "sham-acupuncture" for migraine

INTERVENTION: Group A:acupuncture(shallow puncture in meridian points) ;Group B:acupuncture(normal puncture in meridian points) ;Group C:acupuncture(normal puncture in meridian points) ; CONDITION: migraine PRIMARY OUTCOME: number of migraine outbreak days per mont; SECONDARY OUTCOME: headache duration;quality of life;headache intensity; INCLUSION CRITERIA: 1. According to the diagnostic criteria for migraine with or without aura of International Headache Society (IHS) in 1988; 2. The migraine attacks 2‐6 times in last 4 weeks; 3. The onset of migraine is before the age of 50; 4. The patient is diagnosed as migraine for at least 26 weeks before entering the study; 5. The migraine lasts for 4 to 72 hours without taking drugs in acute phase, or for more than 2 hours taking drugs at attack stage; 6. The patient is between 18 to 65 years old; 7. The patient is voluntary and agrees to sign informed consent.