Increased subcutaneous air accumulation after lung nodule surgery generally refers to subcutaneous emphysema, and the common treatments include general treatment and closed chest drainage. 1. General treatment: many chest surgery patients will have subcutaneous emphysema after extubation. For patients with mild subcutaneous emphysema and no other symptoms, the subcutaneous emphysema will be absorbed and disappear by itself after a period of time with the healing of the wound, so there is no need for special treatment. During the period, attention should be paid to keep the patient’s bowel movement smooth, so as not to aggravate the emphysema by holding the breath with force. 2. Surgery: For patients with serious subcutaneous emphysema and symptoms such as dyspnea, closed chest drainage can be performed. In some patients with mediastinal emphysema combined with subcutaneous emphysema, the skin can be cut in the upper sternal fossa area, and the subcutaneous tissue can be separated and ventilated. For patients with subcutaneous emphysema after lung nodule surgery, it is recommended that they go to the relevant departments of regular hospitals as soon as possible, and under the guidance of professional physicians, so as to avoid delaying the condition.