Compared with other mass spectrometry technologies, time-of-flight mass spectrometer is easy to operate and can be used even by those who have no professional training in analytical chemistry. Especially in recent years, the development of applications such as pathogenic microorganism identification and mass spectrometry has made it more and more clinically tested. It is favored in the field. For example, the previous microbial identification was completed by biochemical culture, which is time-consuming and low in detection accuracy, but now it is faster, higher throughput, and more accurate to identify from the proteome level by time-of-flight mass spectrometry. In addition, traditional protein molecules are mostly detected by immunoassay methods, which require the help of third-party antibodies. The antibody and the test object are first subjected to an immunochemical reaction, and then detected by an instrument. The method is complex and easy to cause false detection. Positive, while the time-of-flight mass spectrometer can directly detect the molecules of the test object. Regarding time-of-flight mass spectrometers, the following statements are true:. ['Biochemical culture takes less time.', 'Requires third party assistance.', 'Instrument structure is complex.', 'Obvious advantages in detection efficiency.']