The utility model discloses a still field machine is smashed to straw, including frame, gear box (3) and drive mechanism, its characterized in that: being equipped with rubbing crusher in the frame and constructing, rubbing crusher constructs the top and is equipped with casing (1), be equipped with in the place ahead frame that rubbing crusher constructs check apron (7), the rubbing crusher structure contains: arbor pipe (13), arbor pipe (13) surface be equipped with radial and outside extend move sword (12), moving sword (12) and containing two sets of flail knives (122) and a set of straight sword (121), establish in straight sword (121) both sides flail knife (122), and open to straight sword (121) both sides in proper order. Compared with the prior art, the utility model has the advantages of simple structure reduces labour cost, and the straw is smashed effectually.