Her2 is human epidermal growth factor receptor-2, a proto-oncogene. overexpression of the HER2 gene is not only associated with tumor development, but also an important clinical treatment and prognostic indicator, and an important target for the selection of tumor-targeted therapeutic agents. Her2(2+) refers to the overexpression of Her2 gene in tumor histopathological examination, which needs to further improve the gene expression detection, if Her2-FISH gene quantitative detection and other items, and then judge according to the test results. It is not possible to simply evaluate whether Her2 (2+) is good or bad. If the patient’s histopathology report suggests Her2 (2+), it is recommended that the patient go to a specialist for follow-up in a timely manner and follow the specialist’s advice to standardize the diagnosis and treatment, and adhere to regular follow-up and follow-up.