A 2.5 years old male domestic shorthair cat named Soda came to the Veterinary Teaching Hospital of Brawijaya University Malang in Indonesia, in respiratory dyspnoea with an asphyxiate condition for a few days. The cat has problems like open mouth breathing, increased respiratory effort, panting, abdominal breathing, weak, agitated, and the owner suspected that the cat is being hit by a vehicle. Physical examination shows the cat has 5.2 kg body weight, a body temperature of 37.5° C, pale mucosa, CRT <2 seconds, abdominal breathing with a frequency of breath 84 times/minute and heart rate 146 times/minute. Hematology, blood chemistry, radiographs and laboratory tests were performed to confirm the diagnosis. Blood chemistry and hematology results show that The cat has thrombocytopenia, with a value of 233 x 10^3/μL, hyperproteinemia with a value of 8.1 g/dL, hyperalbuminemia with a value of 4.1 g / dL, and total bilirubin of 0.3 mg/dL. The results of the Radiography examination showed an abnormality in the thoracic cavity, there are abdominal organs in the thoracic cavity. Based on the results of physical examinations and CBC examinations, Radiography and blood chemistry, the cat was diagnosed with diaphragmatic hernia. The treatment selected in this case was to perform diaphragmatic hernia surgery. One week after treatment, the cat was active without symptoms of respiratory distress. Treatment of diaphragmatic hernia cases in lateral radial tears has a high cure rate if treated quickly and appropriately. The mortality ratio of hernia diaphragma can be related to the location of the rupture.