Multi functional cut-off device designed specifically for underground operations in coal mines. During tunnel excavation support and repair, high-strength anchor rods or cables below 24mm can be safely and quickly cut off. The performance is reliable, the strength is strong, the weight is light, and the operation is easy to carry. The blade can be disassembled and rotated. Suitable for working faces in multiple directions and various environments: greatly improving work efficiency, reducing labor intensity, and highly welcomed by underground workers.