Straw machine refers to a machine that uses agricultural crops such as corn straw, wheat straw, cotton stalks, straw, rice husks, peanut shells, corn cobs, tree branches, leaves, sawdust, and solid waste (such as edible mushroom residue, wine residue, furfural residue, etc.) from rural areas as raw materials, which are crushed, pressurized, and densified to produce "straw coal".