Bactrim ointment, whose main ingredient is mupirocin, is a broad-spectrum antibiotic ointment used for the treatment of bacterial infections. It is a topical drug commonly used for skin inflammatory infections, such as folliculitis, boils, skin lacerations and co-infections of eczema. This drug can not only penetrate into the skin tissue quickly, but also form a protective film on the surface of the skin, which is conducive to wound healing and has few side effects on the body, so it is more commonly used in clinical practice. However, it should be noted that it cannot be used for wound infections of the cornea and oral mucosa, although the effect is better, when encountering more serious wound infections, intravenous or oral antibiotics are required for treatment.