The baby’s finger is swollen and bruised by the door, can take local cold compresses, disinfection treatment, the use of medication and so on. If there is a fracture, but also to take local fixation or surgical treatment and other methods. 1. Local cold compresses: if it is a mild bruising and finger condition is normal, just soft tissue injury, you can first carry out local cold compress treatment. You can use ice packs to reduce subcutaneous oozing and bleeding, and then apply local hot compresses after 24 hours, and use warm towels to promote the dissipation of bruises. 2. Sterilization: If the bruise hematoma is obvious, local sterilization can be carried out and puncture can be used to suction the rest of the bruise. If the finger is pinched by the iron door and the wound is deep, it is recommended to disinfect and inject tetanus vaccine in time. 3. Medication: Pain medication should be taken under the guidance of a doctor to relieve pain. For example, aspirin, ibuprofen, celecoxib and so on. You can also apply Yunnan Baiyao and so on to promote the absorption of bruises. 4. Fracture treatment: If the baby’s finger is pinched by the door fracture, you can take the splint or plaster and other external fixation, or surgical treatment, wait until the fracture began to heal, and then help the baby to carry out the necessary functional exercise of the finger joints. When the baby’s finger is swollen and bruised, it is recommended to consult a doctor and pay attention to the cleanliness of the finger, under the guidance of the doctor to deal with, to avoid self-treatment caused by infection.