The recent prevalence of infectious diseases such as New Coronary Pneumonia (COVID-19), Middle East Respiratory Disease (MERS), Severe Acute Respiratory Syndrome (SARS), and AIDS (AIDS) indicate that safe and effective protective surgical clothing can protect medical staff from blood Invasion of source pathogens. A key element of protective surgical clothing(China SMS Nonwovens) is the ability to block the transfer of microorganisms from the non-sterile side of the fabric to the sterile side. Microbes and pathogens can be carried through the fabric by dust particles or liquids (such as blood, sweat, etc.). Spunbond-meltblown-spunbond (SMS)(Waterproof SMS Non Woven Factory), spunlace entanglement, three-layer or bicomponent fiber webs are commonly used to block liquid penetration with or without chemical finishing agents. Disposable SMS fabrics(Composite SMS Non Woven Wholesale) are formed by sandwiching an inner thermoplastic meltblown microfiber web between two continuous thermoplastic spunbond filament nonwoven webs, where the spunbond layer provides strength and dimensional stability, while the meltblown layer Barrier performance. The research results show that polypropylene SMS protective clothing (for example, 97-100% polypropylene, SMS composite non-woven fabric) can provide maximum protection against blood penetration and microbial penetration. The service provides minimal protection.