Pestle finger is a specific clinical manifestation of the checkup, which is characterized by the expansion of the fingers of the extremities, including the ends of the toes, like drumsticks. Pestle finger occurs, and respiratory diseases have a great relationship, common in, such as idiopathic interstitial pulmonary fibrosis, bronchiectasis, lung cancer. Most of the pestle finger occurs with chronic hypoxia has a certain relationship, due to hypoxia, limb endings, will be compensatory hypertrophy, hyperplasia, so lead to the end of the expansion of the formation of drumstick shape. If you see the formation of pestle finger, the first thing to consider, the above three categories of diseases, can be screened accordingly.