The machine is completely mounted with tractor, during operation, the discs is rotating to turn the soil, particularly, it is suitable for operation on the field with grasses, straw and stems of crops or plants, big soil resistance and with many stones and brickbat, etc. in the field. It is good at cutting the grasses and straw and free from stopped by the grasses, soil or stones, etc. It is easy to adjust and strong and durable.