Genetic counseling takes people with genetic anxiety and trouble as the counseling object, and provides them with necessary suggestions so that they can decide the policies they should adopt. Genetic counseling includes the following contents: diagnosis and treatment of genetic diseases, as well as preventive measures; Prognosis estimation: When I, my spouse, betrothed and their close relatives find genetic abnormalities, I will indicate the risk degree of future children (genetic prediction), the detection of bad gene carriers, prenatal diagnosis, marriage guidance, pregnancy, childbirth and baby care, the danger of consanguineous marriage, the influence of radioactivity on heredity, paternity test, etc.