Blood gas analysis is one of the tests that are now widely used in clinical practice and can effectively help doctors in the study of the condition, differential diagnosis, observation of the efficacy and postoperative evaluation. Through blood gas analysis, it is possible to firstly see the level of oxygen and carbon dioxide in the blood, from which it is possible to determine whether there is a lack of oxygen. In addition, blood gas analysis can be used to correctly determine whether there is an acid-base imbalance in the patient’s body, and the different data of acid-base imbalance can also reflect that there are problems in certain parts of the patient, which will help the doctor to find the cause of the disease and give a timely treatment plan. Finally, through blood gas analysis, it is also possible to observe the electrolyte disorders in the patient’s body, which is very helpful for observation during and after the treatment.