A material transfer device is configured for transferring a number of molded products. The material transfer device includes a control box and a transfer mechanism. The transfer mechanism includes a receiving chamber, a driving device, and a supporting structure. The receiving chamber is located on the control box. The driving device is located on a side surface of the receiving chamber and extends into the receiving chamber. The supporting structure includes a holder, a rotating portion, and a number of supporting plates. The holder is located on the driving device to be driven thereby to move along the receiving chamber. The rotating portion is fixed on the holder. The supporting plates are fixed on the rotating portion. The rotating portion drives the supporting plates to rotate.