It is usually impossible to tell if you have influenza A. You should seek medical attention in time, and a medical professional can determine if you have influenza A through medical history, clinical manifestations and auxiliary examinations. Influenza A is a transmissible disease, easy to group infection, if there is a history of contact with patients with influenza A or patients with influenza A stay in the same confined space, the emergence of generalized muscle pain, nasal congestion, runny nose, headache, fever, chills, and other clinical symptoms should be highly suspicious of influenza A. However, the diagnosis should be confirmed with the help of a medical doctor. However, the diagnosis of influenza A should be made with the help of antigen and antibody test of influenza A virus or nucleic acid test of influenza A virus. If the result of the test is positive, combined with the history and clinical manifestations, influenza A can be diagnosed as influenza A, and targeted treatment can be carried out. Therefore, patients who are suspected of having influenza A with the above clinical symptoms should go to the hospital in time, complete the examination, make a clear diagnosis, and carry out standardized treatment as soon as possible with the help of the doctor to speed up the recovery of the disease.