A chopping machine , comprising: a base ; a driving unit , disposed on the base ; a cutting unit , connected to the driving unit , the cutting unit having a blade shaft and an immovable blade seat , the blade shaft having a plurality of movable blade seats , each movable blade seat being provided with a movable blade , the immovable blade seat being disposed on the base , one side of the immovable blade seat , close to the blade shaft , being provided with an immovable blade ; a conveying unit , connected to the cutting unit , the conveying unit having a strip feeding shaft , a roller and a feeding member , the strip feeding shaft being sleeved with a strip feeding roller , the roller being spaced and disposed under the strip feeding roller , the feeding member including a feeding opening and a feeding passage , characterized in that the side of the immovable blade seat , close to the blade shaft , has a second groove , one side of the second groove is provided with at least one adjustment member , the immovable blade is secured to the second groove , the side of the immovable blade seat , close to the blade shaft , is connected with a pressing plate , a top end of the pressing plate extends to a position relative to a middle portion of the second groove for pressing against a portion of the immovable blade , the pressing plate locks the immovable blade to the immovable blade seat through at least one second screw member , and the immovable blade can be pushed outwardly or retracted inwardly by adjusting the at least one adjustment member , thereby adjusting a gap between the immovable blade and the movable blade . a base ; a driving unit , disposed on the base ; a cutting unit , connected to the driving unit , the cutting unit having a blade shaft and an immovable blade seat , the blade shaft having a plurality of movable blade seats , each movable blade seat being provided with a movable blade , the immovable blade seat being disposed on the base , one side of the immovable blade seat , close to the blade shaft , being provided with an immovable blade ; a conveying unit , connected to the cutting unit , the conveying unit having a strip feeding shaft , a roller and a feeding member , the strip feeding shaft being sleeved with a strip feeding roller , the roller being spaced and disposed under the strip feeding roller , the feeding member including a feeding opening and a feeding passage , characterized in that the side of the immovable blade seat , close to the blade shaft , has a second groove , one side of the second groove is provided with at least one adjustment member , the immovable blade is secured to the second groove , the side of the immovable blade seat , close to the blade shaft , is connected with a pressing plate , a top end of the pressing plate extends to a position relative to a middle portion of the second groove for pressing against a portion of the immovable blade , the pressing plate locks the immovable blade to the immovable blade seat through at least one second screw member , and the immovable blade can be pushed outwardly or retracted inwardly by adjusting the at least one adjustment member , thereby adjusting a gap between the immovable blade and the movable blade . <EOS>