The social structure has dramatically transformed in recent years; not only the rapid decrease of birth rate and gradually drops of the new birth population, but also rapid increase of foreign marriage, foreign spouse and the children from these spouse. In addition, population ageing speeds up, the ratio of older population grows extraordinarily, and it has multi-impact to education, economy, politics and welfare of the society. Hence, the following three core issues: 1.encourage giving birth to slow down the reducing rate of children, 2.improve effective guidance to the foreign spouse and their families to match multi-culture, 3. provide complete aged people care to meet aged generation has become an eminent study of sociology field. According to the traditional economical point of view, population is the basis of social economy connection. Therefore, maintain “reasonable population growth”, encourage giving birth to increase birth rate. Assure “fewer children” trend and create excellent living environment and upgrade population quality are the important subjects when facing population difficulties.