1. One-child policy slowed down the population growth rate below the speed of growth in the GNP (gross national product) and GDP (gross domestic product).
- Such economic development significantly improved the average living standards of Chinese citizens.
- From 1978 to 1995, urban people's per-capita incomes for living expenses increased 10 times more and the per-capita net incomes of rural families increased 9 times more.
- Per-capita housing space increased both in urban and rural areas.
- Also, as people's quality of life and purchasing power improved, from 1978 to 1994, China's consumer goods market expanded 13.7 times larger.
- Majority of families got basic needs of living such as food and clothing. More and more people afforded TV sets, refrigerator, washing machines, and other durable goods.

2. Eradicated poverty by reducing the family size.
- One-child policy prevented the family size from growing in to unsustainable size.
- A single child can be educated properly without straining their family.

3. Individual saving rate increased
- People spend less money and time for their children.
- Also, Chinese people no longer rely on their children for their older age.