Redness and swelling of a child’s fingertips may be related to trauma, infection, onychomycosis and other conditions. After the child’s fingertip trauma will cause local soft tissue damage, serious will cause the end of the finger bone fracture, it will appear red, swollen, pain and other symptoms. If the fingertip trauma is not thoroughly disinfected and cleared, bacterial invasion will cause infection of the fingertip, serious pustular dactylitis will be formed, there will be severe pain, swelling and other symptoms. Some children like to bite their nails, easy to cause nail groove infection, the formation of inguinitis, can also cause redness, swelling, pain and other symptoms. There may be other reasons for the redness and swelling of the child’s fingertips, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.