The invention relates to a vertebral decompression device (10) configured to surround the trunk of a user, comprising: upper support means (12) configured to surround a first portion of the trunk lower support means (14) configured to surround a second portion of the trunk elongation means (16) mounted on the upper support means (12) and on the lower support means (14) and configured to exert a spreading force on the lower and upper support means to move apart same. The invention is characterized in that the device further comprises an electronic control system (18) for controlling the elongation means (16) such as to maintain a determined distraction force on the spine of the user.