Traditional empirical medicine is experiencing the bottleneck of uncertainty technology, resulting in a waste of medical resources and unsatisfactory medical results. Compared to traditional diagnostic methods, precision medicine is accurate and convenient. On the one hand, gene sequencing can identify disease-related issues. Mutated genes to quickly identify symptomatic drugs, reduce detours, improve efficacy, and also reduce drug side effects based on the patient's genetic background; on the other hand, fewer tissue samples are required for precision medical testing, which can reduce the number of diagnostic procedures Damage to the patient's body. It is foreseeable that the advent of precision medicine technology will significantly improve the diagnosis and treatment experience of diseases, especially cancer patients. According to the above text, the correct understanding of precision medicine is:. ['Can reduce drug use, improve medical results, and enhance medical certainty.', 'It has accuracy and convenience, so it has the unparalleled superiority of traditional experience medicine.', 'Reducing injury to patients and reducing side effects are the key to improving the experience and effectiveness of diagnosis and treatment.', 'Can reduce iatrogenic damage, reduce medical resource consumption, and obtain optimized patient treatment benefits.']