NOVELTY - Digesting and reacting system for biomass waste comprises a reactor (1), a low-pressure gas storing tank (2), a methane compressor (3) and a high-pressure gas storing tank (4).    USE - The digesting and reacting system is useful for biomass waste (claimed).    ADVANTAGE - The system is simple in structure and high in efficiency, which can prevent the formation of the solid-liquid layered system to increase the digesting rate and is safe and reliable.    DETAILED DESCRIPTION - Digesting and reacting system for biomass waste comprises a reactor (1), a low-pressure gas storing tank (2), a methane compressor (3) and a high-pressure gas storing tank (4), where the reactor (1) comprises a shell (5); an isolating block (6) is arranged in the shell (5) to divide the content as the ascending moving area and a descending moving area; a material inlet is arranged at the ascending moving area; a material outlet is arranged at the descending moving area; a methane collecting chamber (7) is arranged above the isolating block (6) in the shell (5); the methane collecting chamber (7) is connected with the input end of the gas using device and the input end of the low-pressure gas storing tank (2) via gas pipes at the same time; the output end of the low-pressure gas storing tank (2) is connected with the input end of the methane compressor (3); the output end of the methane compressor (3) is connected with the input end of the high-pressure gas storing tank (4); a rotary wheel (8) is installed on the isolating block (6) and one side of the rotary wheel (8) is located in the ascending moving area and the other side is located in the descending moving area; a blade is installed on the rotary wheel; a nozzle (9) is arranged at the lower part of the rotary wheel (8) in the ascending moving area; the gas outlet of the nozzle (9) is corresponded with the lower part of the blade to drive the blade to drive the rotary wheel (8) to rotate; the nozzle (9) is connected with the gas outlet end of the high-pressure gas storing tank (4) via the gas pipe.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the digesting and reacting system.    Reactor (1)    Low-pressure gas storing tank (2)    Methane compressor (3)    High-pressure gas storing tank (4)    Shell (5)    Isolating block (6)    Methane collecting chamber (7)    Rotary wheel (8)    Nozzle (9)