Absorbing the advantages of advanced foreign like products, 1HZ pull type hydraulic offset heavy-duty disc harrow has a standard design. The complete machine adopts an integral structure ,it is mainly suitable for stubbing before plowing, breaking the hardened field surface, cutting up straws and returning to the field, leveling and preserving soil moisture, etc. The harrow can replace a plow to carry out soil plowing operation in a long-cultivated land with high operational efficiency and great capacity of soil piecing and crushing. After plowing, the field surface is flat and the soil is loose and broken. The disc harrow is well adaptive to heavy soil, waste land and land blocks with much weed.