A detecting device for use in multiple-DOF spherical body, which is applied in a camera and a spherical body, and includes: a fasten plate; at least one rotation mechanism; at least one rolling device; and at least one elevation device; and characterized in: the fasten plate has a bottom plate and plural bottom support rods are disposed between the bottom plate and the fasten plate, the bottom plate has a second rotation mechanism having a second fasten plate and a motor output shaft, the fasten plate has a second elevation device at the bottom and a elevation plate at the top and has a second top rotation disk set and a rotation disk input shat, connection guiding rods are disposed between the elevation plate and the second fasten plate, and the second top rotation disk set has a tray and at least one spherical body holding ring.