The invention relates to a 3D scanning device based on Internet of Things control. The3D scanning device comprises a platform, a support mechanism, a turntable and a scanner. The turntable is providedwith a plurality of notches. A translation mechanism and a lifting mechanism are arranged in the notch. The translation mechanism comprises a belt and two translation assemblies each including a second drive motor, a buffer block, a second drive shaft, and a drive gear. The support mechanism includes a plurality of support units including an air pump, a cylinder, a piston, a connecting rod, a support leg, and a hinge unit. According to the 3D scanning device based on Internet of Things control, the angle of the support leg is changed by the support units so that the angle of the platform is adjusted. Thus, the platform and the turntable are in a horizontal position so as to place objects on the turntable smoothly. Moreover, the lifting mechanism is moved by the translation mechanism in the notch, an object is fixed by enabling a vertical rod in the lifting mechanism to be in contact with the object so that the object is prevented from slipping from the turntable during the rotation ofthe turntable, thereby ensuring smooth scanning.