The invention discloses a method and 
system for producing pure cotton pulp in a dry 
cutting method. The method comprises the following steps: picking cotton, dry 
cutting, preparing alkali, impregnating, cooking and bleaching, concentrating, pulping, removing impurities, 
drying the pulp, and molding. The 
system comprises a 
cutting device, an impregnating device, a cooking-bleaching device, a concentrating device, a pulping device, an 
impurity removal device, a pulp 
drying device and a molding device, which are successively connected with one another. According to the method and 
system for producing the pure cotton pulp in the dry cutting method, a cooking, bleaching and molding process is completed in one step by cutting the material in a dry cutting method, and the material is first 
cut off and then is cooked and bleached by virtue of a 
steam pressure pipe, so that the continuous cooking production is realized, the blocking and intertwining problem of long fibers in screws of a subsequent step is solved, and the production 
energy consumption is reduced; and the technical difficulty in equipment investment and complexity of operation is alleviated, the quality worsening caused by unreasonable application of medicinal liquid in a production process of fibers is solved, the 
energy consumption can be reduced by 90 percent compared with the prior art, and high-quality pure cotton pulp can be produced.