You can't directly lay the wooden floor, you can dry the floor and then lay a film to prevent moisture. If the original floor in the home is uneven or there is no dry flat layer, you can not directly lay the wooden floor. You can choose wooden keel as the base. Before installation, the bottom of wooden keel shall be painted with antirust paint for 3-4 times. The wooden keel needs to be planed after installation, and the solid wood floor needs to be fixed with screws. Buying some insect-repellent drugs and putting them in the keel can prolong the service life of the keel.