The invention relates to a new technological method for screening redried tobacco stems, and the new technological method is used for a tobacco threshing and redrying production line in tobacco industry. The new technological method is based on a closed type five-face sieve rolling tobacco stem sorting machine technology, applies a modular integration method, defines important processing functions such as screening the redried tobacco stems, packaging stem products by using bags, packaging long stems by using cartons, carrying out online disfigurement on the stems and recycling tobacco fragments in the processing procedures of the redried tobacco stems as five functional modules, and organically integrates all the functional modules, thereby achieving the online processing technical aims such as screening the redried tobacco stems only by applying a five-face sieve machine, packaging the stem products by using the bags, packaging the long stems by using the cartons, carrying out online disfigurement on the waste tobacco stems in a centralized way and recycling tobacco fragments; therefore, the long stem rate quality index in the processing procedures of the redried tobacco stems is improved to the standard level of more than or equal to 85%, and is maintained to be stable, and the fragment yield of the recycled tobacco fragments is increased by about 0.25%, so that the economic benefit of an enterprise is improved; furthermore, the new technological method has better social benefit in the aspects of energy conservation, safety and environmental protection.