Retirement policy has impacts on social output and the welfare level of employed population and retired population by affecting theirlabor input and pension burden. A more adequate economic argument, therefore, should focus on adjusting the retirement pelicy. The study onthe retirement age analysis of the single-person economy showed that there was an "optimal" retirement age based on the maximization of theindividual's effective use, which could reasonably balance the total output of life and the leisure after retirement. Similarly, a multi-person economicsociety also had an average "optimal" retirement age. The study concludes that under the background of the current retirement age policy ourcountry has to face an increasingly heavy pension burden, and thus the current retirement age policy needs to be adjusted urgently, Delaying theretirement age at least has no negative impact on employment in the long term, which can promote our country's GDP. What is more, temporarilysurplus social security funds used for financial investment will not help alleviate the burden of social pensions, whereas there is no problem withempty pension accounts. To improve our country's retirement policy, the study puts forward poliey recommendations such as appropriately extendingthe retirement age, raising the pension standard, reducing the pension insurance rate, and keeping accounts of the pension insuranee facts paid by employees.