As a traditional wedding product, green cloth is often used in weddings in China. Usually, the length and width of green cloth can be different according to personal preference. Generally speaking, the length of green cloth can be between 3 meters and 6 meters, and the width is generally between 1.5 meters and 3 meters. However, this may also vary from region to region and customs. Therefore, the specific length and width of green cloth should be determined according to local customs and personal preferences.