Inclusion Criteria:  Patients with pneumothorax or three and three lower rib fractures. Age ≥18 years old and ≤40 years old, no gender limit; No chronic underlying disease, no new onset or acute disease; No long-term drug use history; Understand and agree to participate in this study and sign an informed consent form.  Exclusion Criteria:  Patients who have received EA treatment in the past; Patients with skin infections in the local meridian points; Patients with upper or lower limb nerve injury; Those who have consumed tea, coffee, chocolate and smoked one week before the start of the test; Those suffering from respiratory diseases, hyperthyroidism, sinus tachycardia, and arrhythmia; Patients with severe heart, lung, liver, and kidney function abnormalities, patients with hypertension, patients with active gastric and duodenal ulcers or patients with co-infection; Those who have participated in or are participating in other clinical trials one month before enrollment.