The invention relates to a chair preventing spinal curvature. The chair preventing spinal curvature effectively solves the problem that a current chair preventing spinal curvature cannot prevent scoliosis, has a poor prevention effect and does not have a massage function; according to the technical scheme, the chair preventing spinal curvature comprises a chair body, and is characterized in that the chair body is slidably connected with an anti-scoliosis device up and down, and the chair body is slidably connected with an anti-kyphosis device front and back; the anti-scoliosis device comprisestwo vertical plates, the two vertical plates are connected to a first driving motor, the anti-kyphosis device comprises a semi-circular guide rail, the semi-circular guide rail is connected with twoarc-shaped retaining rings, and the two arc-shaped retaining rings are connected with a second driving motor. The chair preventing spinal curvature has the advantages that the rigid arc-shaped retaining rings capable of being adjusted back and forth are used for replacing a soft bandage, so that adjustment can be carried out while a corrective effect is strengthened; the anti-scoliosis device is additionally arranged, so that scoliosis caused by the fact that the body of a user skews for a long time is prevented; a waist and back massage device is also additionally arranged, so that the user sits for a long time is massaged, thereby preventing other symptoms induced by long-time muscle fatigue from occurring.