The present invention relates to a medical apparatus for spinal therapy, which is a bed-type apparatus equipped with a treatment head and performs message and acupressure while moving along the length of the spine, and more particularly to a fixing structure of a treatment head in the medical apparatus, which wears out slowly and allows the treatment head to move in a vertical direction. The medical apparatus for spinal therapy having the fixing structure of a treatment head is advantageous over known apparatuses in that it can give various types of stimulation to human body parts and incurs lower maintenance expenses.