If the ceiling fan has been used for about one year, check whether all parts of the ceiling fan, such as the suspender, screws, wiring base, blades, etc., are loose or corroded, rusted, cracked, deformed, etc., whether the connection of all parts of the suspender and the hook are firm, and whether the force is good. If there are loose screws, tighten them in time, and replace the damaged parts in time. In addition, check the wear of screws and pin shafts every 2-3 years, and replace them in time in case of serious wear.