The purpose of the present study is to investigate the pathological mechanism of cervical vertigo by studying the nervous connections between cervical spinal ganglia and cervical sympathetic ganglia. Seventy New Zealand rabbits were randomly divided into a superior cervical spine group (C2 and C3), an inferior cervical spine group (C4 through C6), and corresponding control groups. The cervical ganglia of the rabbits in the experimental groups were injected with 4% fluorogold solution, whereas those in the control groups were injected with physiological saline. The rabbits were killed after four days. The sympathetic ganglia were cut, preserved via cryosection, and observed under a microscope. Fluorescence was observed in the ipsilateral superior cervical sympathetic ganglia of the specimens in C2 and C3 into which dye was injected, but not in the inferior cervical ganglia or contralateral superior ganglia. Fluorescence was also observed in the ipsilateral inferior cervical sympathetic ganglia in the C5 and C6 groups, but not in the contralateral inferior cervical sympathetic ganglia or superior ganglia of either side. Injection of fluorogold at C4 produced ipsilateral fluorescence in both the superior and inferior cervical sympathetic ganglia. Nerve fiber connections are present between the cervical spinal ganglia and cervical sympathetic ganglia. These connections are arranged in a segmental distribution.