The invention provides a lathe splash-proof device for an industrial machine. The lathe splash-proof device comprises a positioning bolt, a T-shaped slot, a T-shaped slide block, a rotating shaft, a connecting lug, an upper splash-proof plate, a gear I and a gear II, wherein the positioning bolt is mounted in the middle of the fixed plate, the T-shaped slot is formed in the upper end surface of a lathe body, and the T-shaped slide block is fixed on the lower end surface of a rear splash-proof plate and is assembled into the T-shaped slot. According to the design, the lathe splash-proof device can be rapidly assembled; the rotating shaft is mounted at the upper part in a cavity body, the connecting lug is fixed on the left side of the lower end surface of the splash-proof plate, the upper splash-proof plate is arranged on the upper end surface of the rear splash-proof plate, the gear I is mounted at the right part of the annular side surface of the rotating shaft and is meshed with the gear II, and the gear II is mounted at the lower part in the cavity body, so that the splash-proof range of the device is increased; and the device is simple in structure, strong in practicability, good in stability and high in reliability and has a good splash-proof effect.