It is best to go to the hospital for examination first to see if the dog's ear hematoma is serious. If it is caused by trauma and the condition is relatively mild, you can spray some Yunnan Baiyao appropriately. If the condition is serious, it is recommended to suture or perform surgery. Operation. Ear hematoma is usually caused by scratches or bites on the dog's ears. It is common in dogs with large droopy ears. Therefore, owners of such dogs need to pay more attention to keeping their ears clean, and seek medical treatment in time if problems are found.