Occasional dry and wet rales or even twanging sounds and croup in the lungs are symptoms of the clinical diagnosis of chlamydial pneumonia. Chlamydia pneumoniae is a newly discovered chlamydial agent that causes respiratory and pulmonary infections. The intracellularly parasitic chlamydia (Chlamydia pneumoniae is a Gram-negative pathogen that is widely spread in nature. It does not have the ability to synthesize the high-energy compounds ATP and GTP, which must be provided by the host cell, thus becoming an energy parasite, mostly in the form of spheres and piles with cell walls, to generally parasitize animal cells. They were once classified as viruses, but were later found to be a class unto themselves. The etiology of the dry and wet rales and croup that can be heard in the lungs: The dry and wet rales and croup that can be heard in the lungs are caused by intracellular parasitic chlamydia, and the disease can be contracted by inhaling droplets from sneezing. Acute pulmonary edema: Acute pulmonary edema is a clinical syndrome in which the contractility of the myocardium decreases significantly in a short period of time for various reasons, or the left heart load increases significantly, resulting in a sharp decrease in cardiac output and a sharp increase in pulmonary circulatory pressure, and acute pulmonary edema is the main manifestation of acute left heart failure. Generally, pulmonary edema can be divided into five stages: cellular edema, interstitial edema, alveolar edema, shock and end stage. Its main clinical manifestations are: sudden onset of severe dyspnea, telescopic breathing with coughing, often coughing up pink frothy sputum, patient’s irritability, lip cyanosis, profuse sweating, increased heart rate, both lungs covered with wet rales and croup, severe cases can cause syncope and cardiac arrest. Tropical pulmonary eosinophilia: also known as Weingarten syndrome. Tropical pulmonary eosinophilic pneumonia (TPE), is a syndrome characterized by fever, malaise, anorexia, weight loss, paroxysmal dry cough and asthma or shortness of breath with significantly elevated peripheral blood eosinophils that resolves spontaneously after a few weeks. Bronchial asthma: short for asthma, is a chronic inflammatory disease of the airways involving a variety of cells (e.g., mast cells, eosinophils, neutrophils, T lymphocytes, airway epithelial cells and smooth muscle cells) and cellular components (e.g., IL-2, histamine, leukotrienes, etc.). The main clinical manifestations are increased airway responsiveness to a variety of irritants, recurrent episodes of wheezing, shortness of breath, chest tightness and/or cough, mostly at night and/or in the early morning. In recent years, the United States, the United Kingdom, Australia, New Zealand and other countries have an increasing trend in the prevalence of asthma and mortality, there are about 300 million asthma patients worldwide, has become a serious threat to public health a major chronic disease, the prevalence of asthma in China is about 0.5% to 5%, and the trend is increasing year by year, it is estimated that the country has about 60 million asthma patients.