Abstract: Degeneration was made in 12 adult rats to study the course and projections of the ros-tral spinocerebellar tract (RSCT),after unilateral lesions in the C_5～8 spinal segments.The re-sults show that degeneration fibers of the RSCT originated from the cervical enlargement as-cend ipsilaterally in the lateral funiculus of the ccervical cord,enter the cerebellum via the in-ferior and superior cerebellar peduncles,project bilaterally to the anterior lobe and the Ⅳ～ Ⅸ lobules of the posterior lobe of the cerebellum,with concentration in the ⅪⅠ Ⅲ～Ⅴ and Ⅷ lobules.The degeneration fibers appear in the granualar layer of the cerebellar cortex.In ad-dition,the degeneration fibers can also be seen in bilateral fastigial and interposed nuclei.

Key words: rostral spinoeerebellar tract, cerebellum, degeneration