The invention discloses a safe rubber protective shell for corners of mechanical equipment. The safe rubber protective shell for the corners of the mechanical equipment comprises a protective shell body. The right side face of one end of the protective shell body is fixedly connected with a connecting plate. The right side face of the connecting plate is connected with the right side face of an inner wall of a groove in an overlapping manner. The groove is formed in the left side face of the other end of the protective shell body. The front face of the connecting plate is fixedly connected with the back face of a first thread nut. The first thread nut is internally connected with a threaded rod through threads. The outer surface of the threaded rod is connected with a second thread nut through threads. According to the safe rubber protective shell for the corners of the mechanical equipment, by arranging a rubber protective layer, a heat insulation protective layer and a damping protective layer, a net face of an elastic steel wire net is smooth and tidy, the structure is firm and uniform, the overall performance is good, and therefore the effect of shaking on the protective shellbody can be reduced, the protective shell body is more stable after being fixed, and the protecting effect and performance of the protective shell body can be guaranteed.