It is best to cut off a split nail that bleeds, as failure to do so may cause the wound to become infected and inflamed. If the nail splits and bleeds, it means that the capillaries in the nail bed have ruptured, and the red blood cells in the blood vessels have started to extravasate. In order to avoid the wound from developing a secondary infection in the nail bed, it is necessary to cut off the broken nails, and carry out a local anti-inflammatory treatment on the wound, such as the use of amoxicillin and erythromycin ointment, etc., and bandage it if necessary. There may be many reasons for the nail splitting, such as external damage, lack of nutrition, etc. To reduce the probability of nail splitting, you can supplement the appropriate trace elements, such as calcium and zinc, pay attention to the combination of work and rest, and develop a good habit of living. After the nail splitting if the bleeding is serious, or the wound appears secondary infection, etc., should promptly consult a doctor, do not self-medication, under the guidance of the doctor to deal with.