Automatic stretchy cradle

The utility model discloses an automatic stretchy cradle which comprises a base frame, a fixation frame and a support and further comprises a stretchy support, a stretchy connection frame, a rocker mechanism and a stretchy square cradle device. The base frame is fixedly connected with the stretchy support through a bolt, and the support is connected above the stretchy support in a threaded mode. A stretchy support seat is arranged above the support, and the two ends of the stretchy connection frame are provided with through holes which are connected with the stretchy support seat in a pluggable mode. The stretchy connection frame is connected with the stretchy square cradle device through a cradle hanging line. The fixation frame is fixedly connected with the support in a clamping mode. The rocker mechanism is provided with a stretchy rocker, a fly wheel and a motor. The motor is connected with the fly wheel, the fly wheel is connected with the stretchy rocker, and the stretchy rocker is connected with the st