Thumbnails growing into the flesh may be caused by excessive trimming, ingrown nails, etc. They can be treated with proper nail clipping, medication and surgery. 1. Proper nail clipping. Early detection of thumbnail in the flesh generally need to cut off part of the nail, but should not be cut too short, to avoid the formation of onychomycosis. 2. Medication. Prolonged foot thumb nail embedded in the flesh is prone to the formation of inguinitis, if there is a slight inflammatory reaction without abscess, generally available aluminum acetate solution such as rinsing; if there is a bacterial infection, it is necessary to oral or local application of antibiotics, such as mupirocin ointment, oral clindamycin and so on. The above drugs should be used according to the doctor’s prescription. 3. Surgical treatment. When the symptoms are serious, nail extraction surgery is needed, and abscesses need to be incised and drained. When the thumbnail of the foot grows into the flesh, it needs to be dealt with in time, and if it can’t be solved by itself, it needs to seek medical treatment in time.