A device for collecting and processing an electromyography signal of a human body, comprising: an electrode module (100, 200, 300, 1200, 1300,1710) configured to collect the EMG signal of the human body, the electrode module (100, 200, 300, 1200, 1300,1710) including a base structure (103, 203, 303, 701, 1203, 1303), at least two electrodes, and a plurality of sucker structures (800, 1000, 1100, 1210, 1310), the at least two electrodes being arranged at intervals on a surface of the base structure (103, 203, 303, 701, 1203, 1303), the plurality of sucker structures (800, 1000, 1100, 1210, 1310) being arranged in an array or randomly distributed on surfaces of the at least two electrodes or on a surface of the base structure (103, 203, 303, 701, 1203, 1303), wherein each of the sucker structures (800, 1000, 1100, 1210, 1310) is a three-dimensional structure made of reversibly deformable material, the device being characterised in that each of the sucker structures (800, 1000, 1100, 1210, 1310) includes a hollow part (810, 1010) and an middle structure (1020, 1120) located in the hollow part (810, 1010) of the sucker structure (800, 1000, 1100, 1210, 1310), the hollow part (810, 1010) having an opening used to contact a human skin at an end of the sucker structure (800, 1000, 1100, 1210, 1310), a part of the middle structure (1020, 1120) being connected to a side wall of the sucker structure (800, 1000, 1100, 1210, 1310) where the hollow part (810, 1010) is located, other parts of the middle structure (1020, 1120) being fitted to, but not connected to the side wall of the sucker structure (800, 1000, 1100, 1210, 1310) where the hollow part (810, 1010) is located, and the middle structure (1020, 1120) dividing the hollow part (810, 1010) of the sucker structure (800, 1000, 1100, 1210, 1310) into a plurality of interconnected spatial areas. an electrode module (100, 200, 300, 1200, 1300,1710) configured to collect the EMG signal of the human body, the electrode module (100, 200, 300, 1200, 1300,1710) including a base structure (103, 203, 303, 701, 1203, 1303), at least two electrodes, and a plurality of sucker structures (800, 1000, 1100, 1210, 1310), the at least two electrodes being arranged at intervals on a surface of the base structure (103, 203, 303, 701, 1203, 1303), the plurality of sucker structures (800, 1000, 1100, 1210, 1310) being arranged in an array or randomly distributed on surfaces of the at least two electrodes or on a surface of the base structure (103, 203, 303, 701, 1203, 1303), wherein each of the sucker structures (800, 1000, 1100, 1210, 1310) is a three-dimensional structure made of reversibly deformable material, the device being characterised in that each of the sucker structures (800, 1000, 1100, 1210, 1310) includes a hollow part (810, 1010) and an middle structure (1020, 1120) located in the hollow part (810, 1010) of the sucker structure (800, 1000, 1100, 1210, 1310), the hollow part (810, 1010) having an opening used to contact a human skin at an end of the sucker structure (800, 1000, 1100, 1210, 1310), a part of the middle structure (1020, 1120) being connected to a side wall of the sucker structure (800, 1000, 1100, 1210, 1310) where the hollow part (810, 1010) is located, other parts of the middle structure (1020, 1120) being fitted to, but not connected to the side wall of the sucker structure (800, 1000, 1100, 1210, 1310) where the hollow part (810, 1010) is located, and the middle structure (1020, 1120) dividing the hollow part (810, 1010) of the sucker structure (800, 1000, 1100, 1210, 1310) into a plurality of interconnected spatial areas.