Gas chromatography-mass spectrometry (GC-MS) is a technology that combines gas chromatography (GC) and mass spectrometry (MS). Gas chromatography has * separation ability, but its qualitative ability for unknown compounds is poor; Mass spectrometry has the ability to identify unknown compounds and sensitivity, but it requires that the detected component is generally a pure compound. So the effective combination of these two, complementing each other's strengths and weaknesses, not only compensates for the disadvantage of GC's inability to reliably qualitatively identify unknown components in complex compounds based solely on retention time, but also utilizes MS with strong identification ability and sensitivity as a detector. With its high resolution, high sensitivity, and simple and fast analysis, gas chromatography-mass spectrometry has achieved effective qualitative and quantitative analysis of complex organic compounds in many fields. Gas chromatography-mass spectrometry (GC-MS) has been widely used in practical operations and plays a crucial role in fields such as food safety, environmental testing, and petrochemicals. Especially in the field of food safety, the use of GC-MS has improved the technological level of food safety, enhanced food testing technology, and made people more confident in food safety. GC-MS can accurately perform qualitative and quantitative analysis, quickly determine residual pesticides on agricultural products such as vegetables and fruits, and simultaneously detect multiple pesticides, not limited to one. In addition to pesticide residues in fruits and vegetables, GC-MS can also analyze and identify the aroma components of wine to determine its quality and flavor. In addition, in response to environmental pollution issues such as water and soil, relevant departments and monitoring agencies use gas chromatography-mass spectrometry to determine the components of pollution. By leveraging the advantages of high selectivity, high sensitivity, and low detection limit of GC-MS, it is capable of detecting this type of pollutant. Organic compounds present in soil can be classified into polycyclic aromatic hydrocarbons, lipids, and organochlorine compounds, which require different instruments for detection. GC-MS can comprehensively detect these three types of substances, avoiding the trouble of machine detection. With the development of GC-MS technology and the gradual exploration of its advantages, GC-MS will play a significant role in more and wider fields, helping people achieve accurate judgments. Miniaturization and portability are the development trends of the scientific instrument industry, which is gradually transforming towards intelligence, miniaturization, and integration. Gas chromatography-mass spectrometry is no exception, as it is a product of integration development. Based on this, the next step is to pursue miniaturization and portability development. In many cases, large gas chromatography-mass spectrometry (GC-MS) instruments can affect the efficiency of detection and fail to respond to emergencies in a timely manner. For example, in environmental emergency testing, if a sudden environmental pollution accident occurs, the experimenters still need to take samples and go to the laboratory for testing, or move the GC-MS instrument in the laboratory, which not only delays time but also causes greater losses and costs; For example, when encountering food safety issues, if you have a portable gas chromatography-mass spectrometry (GC-MS) device in your hand, you can conduct spot checks anytime and anywhere. Therefore, there is a huge market demand for miniaturized and portable gas chromatography-mass spectrometry (GC-MS) devices. From the current trend, gas chromatography-mass spectrometry (GC-MS) has enormous potential for development, and the future market prospects will be even broader. For China, instrument companies are facing both challenges and opportunities. Domestic instrument manufacturers also need to gain insight into market opportunities, enhance their core innovation capabilities, strengthen technology, and promote further development of domestic instruments!