Pestle finger is not recoverable, pestle finger may be caused by bronchial dilatation, lung abscess, interstitial fibrosis, lung malignant tumor. When patients have pestle finger, they should actively seek medical treatment, complete the relevant examinations, make a clear diagnosis, and give appropriate treatment according to the diagnosis. If the pestle finger is caused by bronchial dilatation, anti-infection and phlegm removal treatment should be given according to the condition of the patient. If the pestle finger is caused by interstitial fibrosis, small doses of erythromycin, fulvestrant and glucocorticoids can be used. If the pestle finger is caused by lung malignancy, surgery, radiotherapy, chemotherapy, target cell therapy, etc. can be considered according to the condition.