The glass cover taking mechanical hand device is used in glass making field. The present invention has right and left material accepting molds and right and left guide blocks inside guide block seats and connected separately, right moving arm and left moving arm with one end connected to a pin in the material accepting mold and the other end connected to the guide rod of the first cylinder fixed on the second support via one other pin, the second support fixed on the guide block seat, the first support fixed on one other plane of the guide block seat and connected to the second cylinder guide rod, the second cylinder fixed in the first support, and the first support fixed on the shaft coupler. The present invention has cylinders in linear motion to open and close the right and left material mold via the moving arms and V-blocks, has simple structure, good guide performance and high rigidity, and may be used to replace operating human hand.