OBJECTIVE To prove the existence of functional area of Back-shu and provide a new thinking for clinical practice. METHODS The consistency between the Back-shu points and Jiaji points at the same level of spinal column was discussed from the origin and development, mechanisms and clinical application of Back-shu and Jiaji points. CONCLUSIONS The points at the same level of spinal column has same origin of development, mechanisms and clinical functions, so as to prove the existence of functional area of Back-shu.