About 2cm lateral to the dorsal midline，in the depression between the S1 and S2，S2 and S3 vertebrae.Two points on each side (Figs.106，107;27#).Perpendicular insertion.Filiform needle 1-1.5cm，or moxibustion with mugwort.Indications：Paralysis of the pelvic limb，neuralgia，endometritis，ovaritis.