First of all, you need to cover the areas you do not want to use cordless paint sprayer when preparing. For example, before painting the house, remove the required furniture, decorations, equipment, etc. Otherwise, after the paint sprayer starts working, the furniture in the room may be stained with atomized paint. For those items that cannot be moved and moved away, such as the window sill and floor of the room, they can be covered with old cloth or old newspaper. In this way, after the painting is completed, there is no need to spend more effort to clean up.Then, before performing the painting work, first mix the paint. Most of the paints on the market are water-based or oil-based. You need to mix it with the correct solvent and use a stir bar and a clean bucket to mix evenly. This is because the paints purchased on the market are heavy paints, and spraying these paints directly may cause them to freeze and drip from the walls.The next step in the paint job is to prepare a sprayer. Different solvents use different solvents. Pour the solvent into the sprayer and select the lowest setting of the sprayer to spray the solvent. Then remove the sprayer's hopper, fill the hopper with the mixed paint, and then insert the nozzle into the China spray gun, the sprayer can start to work.