Do your own health management well. 4. Personalized medical care services. Through genetic testing, we are reminded of what drugs to use carefully, which can not only greatly reduce unnecessary medical expenses, improve efficiency, but also avoid causing greater harm to the human body. Genetic testing is of far-reaching significance: all diseases are related to genes. Gene is a functional fragment carrying genetic information on DNA molecules, and it is the substance that organisms transmit genetic information. Genes dominate life and are the foundation of life. 1, predictive medicine. It can accurately predict the disease risk in healthy period and sub-health period. 2. Disease prevention. Disease = internal cause+external cause. Through the understanding of internal causes, the influence of external causes can be effectively avoided, thus reducing the risk of illness. 3. Health management. If you know that you have a certain disease susceptibility gene through genetic testing, you can actively improve your environment and living habits and do your own health management. 4. Personalized medical services. Through genetic testing, we are reminded which drugs to use with caution, which not only greatly reduces unnecessary medical expenses, improves the curative effect, but also avoids causing greater harm to the human body.