The invention relates to a wood / plastic composite floor board production process and belongs to the field of wood / plastic composite floor board 
processing. The production process includes the first step of carrying out 
drying and ungrease treatment on small wood angle materials, 
straw and other things and then carrying out smashing to enable the 
fineness degree to reach 70-100 meshes, the second step of getting and mixing 
fine powder raw materials, PVC, light 
calcium carbonate, 
calcium stearate, PVC 
processing agents, PVC foaming agents, PVC tensile modifying agents, compound stabilizers, plastic filling agents, soda, PE 
wax, 
stearic acid and PVC foaming modifiers at a high speed, wherein the mixing temperature is 100 DEG C to 130 DEG C, the rotation speed for mixing is 700 rounds per minute, the mixing time is 25 to 35 minutes, and the feeding speed of equipment is 100 to 800 rounds per minute, the third step of carrying out high-temperature extruding and forming on obtained wood / plastic mixed 
powder through a double-screw extruder and a shaping die, and making the wood / plastic mixed 
powder into basic plates, and the fourth step of enabling male grooves and female grooves to be 
cut in four faces of the basic plates through a double-
end milling device, and carrying out printing on the basic plates through 
coating and curing process to form finished wood / plastic composite floor boards. The finished wood / plastic composite floor boards are friendly to environment, waterproof, resistant to 
corrosion, capable of preventing insects, high in 
mildew resistance, good in 
flame retarding performance, strong in 
moisture retention and convenient to install.