Spunbonded nonwoven fabric is made by extruding and stretching the polymer (usually polypropylene) after melting to form continuous filament, laying the filament into a web, and then making the web into nonwoven fabric through thermal bonding. Spunbonded nonwoven fabrics have excellent mechanical properties and good breathability, and are often used in the fields of hygiene or medical care, such as medical masks, diapers, urinary pads, disposable bed sheets, etc. In addition, they are also widely used in home and agricultural fields, such as shopping bags, furniture cover cloth, agricultural product protection bags, etc.