The invention relates to a
processing device for straws of crops, in particular to a
straw secondary chopping and spilling
machine. A
machine frame is integrally in a rhombus shape. A suspension frame is connected to the top on the left side of the
machine frame, and supporting legs are connected to the bottom of the machine frame. A spreader plate
assembly, a chopping knife shaft
assembly and a grass blocking curtain are arranged at the upper right portion of the machine frame, the bottom of the machine frame and the position in front of the supporting legs respectively. The middle of the front face and the middle of the back face of the machine frame are provided with an upper stationary knife row and a lower stationary knife row respectively from top to bottom. A transmission box
assembly is located inside the portion, on one side of the suspension frame, of the machine frame. The transmission box assembly is in driving connection with a
ground roller assembly through a belt. A belt wheel protection cover is arranged outside the belt, a tension device is arranged on the upper portion of the belt, one side of the
ground roller assembly extends out of the lower right portion of the machine frame, and a scraping
fender is arranged on the top of the
ground roller assembly. The
straw secondary chopping and spilling machine has the advantages that straws chopped by a
combine harvester can be sucked to be chopped and spilled for the second time, evenness of spilling of the chopped straws of the crops is achieved, and the problems that stubbles are high and bottoms are not flush after the straws of the crops are
cut, and grass and soil are stuck to the ground rollers easily are solved.