Postoperative arm pain and shoulder pain after pulmonary nodule surgery is not necessarily frozen shoulder, but for people with high prevalence of frozen shoulder, some larger surgeries may induce frozen shoulder. Lung nodule surgery is categorized into thoracoscopic and open-heart surgery. Generally speaking, after thoracoscopic lung nodule resection, the patient can go down to the ground at an early stage, therefore, postoperative arm pain and shoulder pain is not necessarily frozen shoulder, which may be related to the lack of postoperative functional exercise; after open-heart surgery, the patient may need to rest with braking and therefore cause the shoulder joint to have less activity. Frozen shoulder occurs in middle-aged and old people around 50 years old, for this kind of people if the lung nodule resection surgery, postoperative bed rest is needed, thus leading to reduced shoulder joint activity, which in turn induces the onset of frozen shoulder. Whether arm pain and shoulder pain after lung nodule surgery is frozen shoulder or not needs further examination, and it is recommended to consult a doctor in time and receive appropriate treatment according to the doctor’s instructions.