The invention provides a rotatable simple industrial mechanical hand which comprises a ball screw, a moving clamping plate, a supporting block, an auxiliary bearing table, a guiding groove, a guide-incavity, a transparent protection sleeve, a guide wheel and an annular sliding groove. The ball screw is assembled to the middle position of the interior of the groove. The moving clamping plate is installed on the lower end face of a nut seat. The supporting block is fixed to the lower end face of the moving clamping plate. The auxiliary bearing table is installed on the lower end face of a fixedclamping plate. The guiding groove is formed in the lower end face of the interior of the guide-in cavity. The guide-in cavity is formed in the middle position of the auxiliary bearing table. By means of the design, the anti-falling function of goods clamping is achieved, the transparent protection sleeve is arranged on the annular side face of a rotating shaft in a sleeving manner, the guide wheel is installed on the upper end face of the transparent protection sleeve, and the annular sliding groove is formed in the lower end of a mechanical arm. By means of the design, the protection function of the rotating shaft is achieved, the service life of the rotating shaft is prolonged, and the rotatable simple industrial mechanical hand is reasonable in structure, good in protection performance, long in service life, good in stability and high in reliability.