The application discloses a preparation device of grass-like thread, a preparation method of grass-like thread, and application of the preparation device of grass-like thread in the preparation method of grass-like thread. The preparation device of the application comprises multiple
rounding mechanisms, a twisting mechanism, and a storage device. In the preparation method of the application, grass-like material is rounded into single-strand grass-like thread, and the single-strand grass-like thread is twisted into grass-like thread. Through the device and the method of the application, the
processing of the natural fibers can be realized without manual work, the technical problem of how to process the natural fibers without manual work is solved, and the efficiency is improved and the manpower is saved.