Tests related to the diagnosis of asthma in one-year-old babies include chest X-ray, allergen test, bronchoscopy and pulmonary ventilation function test. 1. Chest X-ray: Chest X-ray may be normal in the acute stage of asthma, or it may show interstitial changes such as diffuse hyperdensity in the lung fields, or there may be emphysema and lung atelectasis. 2. Allergen test: It refers to the test of stimulating the skin with a variety of inhalant or food allergens, which is the primary tool for diagnosing allergic diseases (including asthma) and can assist in the diagnosis of asthma. 3. Bronchoscopy: It can help to rule out diseases such as airway foreign bodies, congenital respiratory malformations, and airway lining tuberculosis. 4. Pulmonary Ventilation Function Tests: are commonly used in the diagnosis of asthma and are an important means of assessing the severity and level of control of asthma, and are generally used in children over the age of 5. There are other tests that can help diagnose pediatric asthma, including bronchial provocation test, bronchodilator test, peak expiratory flow rate (PEE) and other methods, the first two positive can help diagnose asthma, PEE ≥ 13% can help confirm the diagnosis of asthma. If asthma is suspected, the child should go to a regular hospital in time to get a clear diagnosis.