Young people: 18 to 65 years old;

Middle-aged people: 66 to 79 years old;

Old people: 80 to 99 years old.

Generally 1 can be roughly divided into: infants (born to 1 year), infants (1 ~ 4 years old), children (5 ~ 1 1) and teenagers (12 ~/kloc-)

2. The United Nations World Health Organization (WHO) recently determined the global constitution and average life expectancy, and made new provisions on the age division standard. This regulation divides people's life span into five age groups, namely, young people under 44 years old, middle-aged people between 45 and 59 years old, young and elderly people between 60 and 74 years old, elderly people between 75 and 89 years old, and long-lived elderly people over 90 years old.

3. According to developmental psychology, it can be divided into: lactation 0- 1 infant 1-2 preschool 3-6, 7- 1 1.

4. Article 2 of China's Law on the Protection of the Rights and Interests of the Elderly stipulates that the age starting point for the elderly is 60 years old. That is, all China people and citizens who have reached the age of 60 belong to the elderly.

Second, the new age division standard in China.

The United Nations World Health Organization (WHO) has recently determined the global physique and average life expectancy, and made new provisions on age division standards. This regulation divides people's life span into five age groups, namely, young people under 44 years old, middle-aged people between 45 and 59 years old, young and elderly people between 60 and 74 years old, elderly people between 75 and 89 years old, and long-lived elderly people over 90 years old.

According to developmental psychology, it is divided into: lactation 0- 1 year-old infant 1-2-year-old preschool 3-6, 7- 1 1, 662-year-old adolescence.

Article 2 of China's Law on the Protection of the Rights and Interests of the Elderly stipulates that the age starting point for the elderly is 60 years old. That is, all China people and citizens who have reached the age of 60 belong to the elderly.

China's age group:

1, childhood. 0-6 years old (one year old, the same below) (1) 0-3 Zhou Yue in infancy; (2) Childhood 4 Zhou Yue-2 or 5 years old; (3) After 2 or 5 years old in early childhood-6 years old;

2. Teenagers. 7 years old-17 years old. (1) Enlightenment age 7-10; (2) Retrograde period: 1 1 year-old-14 years old; (3) The growth period is 15 years old-17 years old.

3. Youth. 18-40 years old. (1) adolescence 18-28 years old; (2) The mature period is 29-40 years old;

4. Middle age. 4 1-65 years old. (1) maturity 4 1-48 years old; (2) The stable period is 49-55 years old; (3) The adjustment period is 56-65 years old;

5. Old age. After 66 years old. (1)67-72 years old; (2) 73-84 years old; (3) After the age of 85.

The definition of "youth" by the United Nations General Assembly is people between 15 and 24 (inclusive). The United Nations "International Youth Year" is held all over the world 1985, and this definition is given specifically for the activities of "International Youth Year". All statistics on youth published by the United Nations, such as the annual statistical yearbook on population, education, employment and health care published by the United Nations system, are based on the above definition.

Various age divisions and life titles 1. Life is divided into nine stages. According to the physiological characteristics of men's growth process, life in ancient China was roughly divided into nine stages in ten years. They are "young", "weak", "strong", "old", "point" and "period", which is quite interesting.

Three. United Nations age classification standard

/kloc-babies under 0/year old.

1-7 years old is a child.

7- 13 years old is a child (child)

13- 18 years old is a teenager (teenager).

18-25 years old is a young man.

Adults aged 25-65.

After the age of 65, you are an elderly person.

The division of these five age groups has delayed the aging period of human beings by 10 years, which will have a positive impact on people's mental health and anti-aging will.

Before 1994, the international classification standard of population problems was three age groups: children from zero to 14; 15 to 64 years old is the labor force population; The elderly are over 64 years old (China is 60 years old).