Marriage is a long-term contractual relationship between men and women on the basis of equality and voluntariness. The essence of marriage is the equal and voluntary combination of men and women of marriageable age in the name of husband and wife in terms of economic life and spiritual material. It should be recognized in medicine, public order and good customs, politics, civil law and so on, and recognized in the form of intimacy or sex, forming a social combination or legal constraint of interpersonal kinship. According to different concepts and cultures, weddings are used to announce. A social phenomenon in which husband and wife work and live together to form a family. There are many reasons for getting married, such as emotion, economy, survival, spiritual belief, society, personal life and physiological and psychological needs. Usually, marriage is the foundation and basis of forming a family, and marriage should adapt to the changes of social population. Both parents call them "in-laws" or "in-laws".