Putting crystalline powder after toenail removal is generally not advocated. Sulfanilamide crystalline powder belongs to the sulfonamide class of broad-spectrum antibiotics, which has an inhibitory effect on most gram-positive and gram-negative bacteria. Nail extraction, generally do not emphasize the placement of anti-inflammatory effect of drugs in the wound, a long time repeated use of drugs will cause drug-resistant reaction, after the removal of nails, to keep the wound dry can be used externally to promote the healing of growth factors. Toenail extraction should pay attention to local cleanliness and hygiene, regular medication changes, replacement of disinfected gauze, to avoid nail bed infection affecting the normal growth of new toenails. It is recommended that patients under the guidance of a professional doctor for standardized treatment, the use of related drugs must consult a professional doctor, not blindly use.