Purple potion is gentian violet, can play a bactericidal role, mainly for staphylococci, gram-positive bacteria, purple potion has the characteristics of strong bactericidal effect, but also has the advantages of small irritation of the tissue, basically no toxic side effects. In clinical use is very wide, commonly used in post-traumatic infection of skin mucosa, ulcers, burns or herpes, etc., can effectively inhibit the growth and reproduction of local germs, but also control the extravasation of tissue fluid, purple potion is suitable for relatively light symptoms of infected wounds. For serious cases, especially the formation of septic conditions, it is not recommended to use purple drops to disinfect the treatment, need to consider incision and drainage, or systemic application of antibiotics to control the condition.