Gene chip can check the following diseases:1. Diagnosis of pathogenic microorganisms infection, through gene screening can know which kind of pathogenic microorganisms people are infected with, whether it is bacterial, viral, or other spirochetes, so as to better carry out the treatment, as well as to determine whether there is drug resistance.2. Screening of malignant tumors of people who are exposed to toxic substances, which is very good diagnosis of malignant tumors such as lung cancer, liver cancer, etc.3. Screening of prenatal genetic diseases, which is beneficial to eugenics, can identify hundreds of diseases.4. Lung cancer, liver cancer, etc. 3, prenatal hereditary disease screening, is conducive to eugenics, can identify hundreds of diseases. 4, for cardiovascular diseases, neurological diseases, endocrine system diseases, immune diseases, metabolic diseases, etc., can be diagnosed at an early stage, in order to facilitate doctors to grasp the condition of the timely treatment. 5, for hypertension, diabetes, etc., people with a family history of screening can be early help in its diagnosis.