<p>The present invention relates to a lumbar traction device which can correct the backbone without direct contact with the backbone when used by a user and of which the shape can be changed according to a human body shape. The lumbar traction device comprises a first body portion, and a second body portion connected to the first body portion and placed below the first body portion, wherein the first body portion has semielliptical lateral sides and comprises a protrusion formed at the lower portion thereof for coupling with the second body portion, the second body portion has trapezoid lateral sides and comprises a coupling groove formed on the upper surface thereof for accommodating and coupling with the protrusion, and the first body portion and the second body portion comprise an elastic material.</p>
