There will be a little vaginal bleeding after Lipo knife surgery, which usually stops in a few days and will not exceed 2 weeks. If you are still bleeding more than 20 days after Lipo knife, it is recommended to seek medical treatment, which is usually related to traumatic crusting, traumatic focal active bleeding, traumatic diffuse bleeding, local infection, etc. 1. traumatic crusting: it may be due to traumatic incomplete crusting, anti-inflammatory and hemostatic drugs can be used on the traumatic surface; 2. traumatic focal active bleeding: gynecological examination will see small local active bleeding spots, which need to be stopped by Physical therapy such as laser and electric ironing to cauterize the local bleeding spots for hemostasis; 3. Diffuse bleeding from trauma: choose vaginal filling gauze and compress it to stop bleeding, and remove it after about 24 hours of compression, which is effective for local trauma hemostasis, or you can also take oral hemostatic drugs to increase the efficacy of vaginal filling gauze; 4. Local infection: when the local trauma is not healing well and bleeding for a long time, most of them are combined with infection, and while giving hemostasis anti-infection treatment should also be carried out. Topical suppositories such as metronidazole suppositories can be chosen locally to fight infection, and oral anti-infective drugs can also be taken to increase the efficacy, such as oral metronidazole antibiotics, cephalosporin antibiotics, etc. The combination of both can fight both aerobic and anaerobic bacteria. Hemostasis can be achieved by anti-infective treatment combined with local hemostatic measures.