In order to study the clinical effect and mechanism of compressive moxibustion on Baihui(Du 20) in treating cervical vertigo

40 cases were randomized into two groups:treatment group treated with compressive moxibustion on Baihui(Du 20) plus acupuncture on Jiaji(Extra 15) of neck

control group treated with acupuncture on Jiaji (Extra 15) alone

and transcranial doppler (TCD) was used to detect the blood flow of VA BA of the patients before and after the treatment. Clinical observation showed that the markedly effective rate of treatment group(85.7%) was higher than that of the control group(57.8%

P<0.01); And after the treatment

there were significant differences (P<0.05) in systolic peak flow velocity (Vs)

end diastolic flow velocity (Vd) and mean flow velocity (Vm) of VA and BA between the two groups.It indicated that the therapy could expand VA BA

improve the hypercoagulative status of blood

improve the blood supply of cerebral vessels

and thus relieve the symptoms of cervical vertigo patients.