This product is mainly used for outpatient B-ultrasound examination in hospitals as a protective cover for equipment. Generally, B-ultrasound positioning is required before and after each operation. The product is directly put on the B-ultrasound probe before the operation or examination, and the rubber is used. The front and middle parts of the protective cover are fixed by ribs, and the tail of the protective cover is fixed with a low-viscosity rubber strip, which can fully ensure that the protective cover is fixed on the probe and the wiring harness to ensure a sterile environment. One-time removal after operation/checkup has the advantages of convenience, cleaning and reducing the work intensity of medical staff.