Finger stab wounds that keep hurting after healing may be related to the presence of residue in the wound, or may be caused by wound infection, excessive scar tissue proliferation and other reasons. 1. Residue in the wound: If there is a residue in the wound after the finger is stabbed and it is not detected and removed, the wound will not heal even if the wound is healed. In this case, even if the wound heals, the residue left in the wound will easily irritate the surrounding muscles, thus causing constant pain. 2. Wound infection: If there is bacteria left in the wound, and there is no reasonable and standardized disinfection treatment and bandaging of the wound, it is easy to form encapsulated fluid during the healing process, which may cause constant pain after the wound heals. 3. Excessive proliferation of scar tissue: especially for people with scarred bodies, the wound healing process is likely to lead to excessive proliferation of scar tissue, or wound scars are located in the peripheral nerve area, which may cause constant pain after wound healing. Finger piercing wound healing pain, but also for other reasons, should be timely to the regular hospital consultation, clear specific causes, by the doctor’s guidance for targeted treatment.