A method and device for measuring spinal column curvature. The method comprises following steps: S1 acquiring a spinal column image by using a three-dimensional ultrasound imaging unit； S2 enhancing, dissecting, and thinning the spinal column image； S3 obtaining, on basis of the enhanced, dissected, and thinned spinal column image, a curve point representing a position of a vertebra； S4 generating a final spinal column curve by using the curve point； S5. and calculating a spinal column curvature angle by using an inflection point of the spinal column curve. The device comprises the three-dimensional ultrasound imaging unit； a processor； and an operating sensor. The method and device use three-dimensional ultrasound imaging to simplify spinal column curvature angle measurement, and use a manual process, a computer-assisted process, or a combination of two processes to collect the curve point, simplify an operation method, and improve precision of a spinal column curvature angle measurement.
