The invention discloses a wood floor cutting machine. The wood floor cutting machine structurally comprises a safety handle, a motor rear cover, a motor, a cutting blade, a fixing device, a cutting base, blade through holes, a grid baffle, a support limiting block, a fixed central shaft, a power line, a three-wire plug, a blade bearing and a protective shell. The interior of the protective shell is matched with the middle of the cutting blade through the blade bearing. The lower end of the protective shell is mounted at the upper end of the fixed center shaft. The left side and the right side of the fixed center shaft are mechanically connected to the position one third of the upper end of the support limiting block. The lower end of the fixing device is connected to the upper end of the cutting base through bolts. The wood floor cutting machine has the beneficial effects that the fixing device is additionally arranged on the equipment, when a wood floor is cut by working staff, the wood floor can be fixed through the fixing device, and the cutting efficiency and the personal safety of working staff are improved greatly during the cutting operation.