Objective To investigate optimal waveforms with stable and lasting efficacy of electrical acupuncture（EA）on neck pain of cervical spondylosis.Method 90 cases of patients with neck pain of cervical spondylosis received in Beibei District Hospital of Chinese Medicine from October 2011 to September 2013 were randomly divided into an acupuncture group

EA group of density wave

EA group of continuous wave

30 cases in each group.Selected acupuncture points were bilateral Jiaji points（the upper and lower pairs）of cervical positive reaction plane

bilateral Jianzhongshu

Dazhui and bilateral Zhongzhu.The acupuncture group was only given needling-acupuncture treatment with no electrical acupuncture and EA groups of density wave and continuous wave were given the treatment of different waveforms of electrical acupuncture after needling-acupuncture.Results Scores of Northwick Park Neck Pain Questionnaire（NPQ）

Pain Visual Analogue Scale（VAS）and 36-Item Short-Form Health Survey（SF-36）for patients in three groups were significantly improved after treatment（P<0.05）;three months after treatment

scores of NPQ

VAS and SF-36 were noticeably improved（P<0.05）

but scores of NPQ

VAS and SF-36 for patients in EA group of density wave were better than the other two groups.Conclusion Acupuncture has positive efficacy on neck pain of cervical spondylosis.Density wave of electrical acupuncture has better analgesic effect on the early stage and long term of neck pain of cervical spondylosis and can better improve patients’ health status than acupuncture and continuous wave of electrical acupuncture

which proves that"density wave is the optimal waveform to treat painful diseases."