The consultation is a diagnosis method in which the physician obtains medical history information through systematic questioning of patients or related persons and makes clinical judgments after comprehensive analysis. Interrogation is the main means of history taking. The completeness and accuracy of the history has a great impact on the diagnosis and management of the disease. Most of the clues and bases for solving the patient’s diagnostic problems are derived from the information obtained through history taking. The information obtained through the consultation is of great importance for understanding the occurrence and development of the disease, its diagnosis and treatment, previous health status and previous diseases, and for providing the most important basic information for the subsequent physical examination and arrangement of various diagnostic examinations of the patient. A physician with profound medical knowledge and extensive clinical experience may often be able to make an accurate diagnosis of certain patients through questioning. Especially in certain diseases, or in the early stage of the disease, the organism is only in the stage of functional or pathophysiological changes, and still lacks organic or tissue or organ morphological changes, while the patient can state certain special feelings, such as dizziness, weakness, change of appetite, pain, insomnia, anxiety and other symptoms much earlier. At this stage, there are no positive findings in physical examination, laboratory tests, or even special examinations, while the information obtained from questioning can be used as a basis for diagnosis much earlier. In fact, in clinical work, the diagnosis of some diseases can be basically determined only through consultation, such as cold, bronchitis, angina pectoris, epilepsy, malaria, biliary ascariasis, etc. On the contrary, neglecting the consultation will inevitably lead to incomplete medical history and lack of detailed and accurate understanding of the disease, which often leads to missed or misdiagnosis in clinical work. For cases with complex conditions and lack of typical symptoms and signs, in-depth and detailed consultation is even more important. Taking medical history is the first step for doctors to treat patients, and its importance also lies in the fact that it is the most important time for doctors and patients to communicate and establish good doctor-patient relationship. The correct method and good consultation skills will make patients feel friendly and trustworthy and confident to cooperate with doctors, which is also very important for diagnosing and treating diseases. In addition to collecting information about the patient’s disease for diagnosis and treatment, the consultation process also has other functions, such as educating the patient, providing information to the patient, and sometimes even the communication itself has a therapeutic effect.