The invention discloses a machining workshop safety reminding device which comprises a moving mechanism, a safety mechanism and a reminding mechanism; the safety mechanism is movably installed on theinner side of the front face of the moving mechanism; the top end of the right side of the safety mechanism is movably connected with the reminding mechanism; the safety mechanism is composed of a driving motor, a rotating shaft, a supporting base, a supporting rod, a warning signal lamp, a warning sound amplifying device, a warning signal lamp cover, a rotating belt, a supporting column, a safetywarning board, a sliding block and a rolling gear. According to the machining workshop safety reminding device, through rotation of a rotating belt rotationally connected to the bottom end of the front face of a rotating shaft and rolling gears arranged on the periphery of the outer side of the rotating shaft, the rotating belt is driven to convey, and the safety warning board is fixedly connected to the top end of the front face of the supporting column so that the safety warning board can be displayed comprehensively; and the occurrence of safety accidents caused by untimely evacuation dueto the fact that workers are not easy to observe at a remote position is avoided, so that the advantages of simple structure, convenience in operation and good reminding effect are achieved.