Chromosome abnormality is a hereditary disease, which is caused by abnormal chromosome number or structure. The current level of medical technology can't change the chromosome structure of human beings, so chromosome abnormalities are generally incurable. Chromosome abnormalities may not affect the health and development of individuals, nor cause any symptoms. In these cases, there is generally no need for special treatment. For some serious chromosomal abnormalities, it may lead to serious health problems, such as mental retardation, developmental retardation, congenital heart disease and so on. For these cases, the current treatment is mainly symptomatic treatment to relieve symptoms, but it cannot be cured. It should be noted that chromosomal abnormalities may be passed on to future generations. Therefore, if there is family planning, genetic counseling and prenatal diagnosis are recommended.