The re-employment of the elderly is an important approach to developing human resources for the elderly, and promoting the younger elderly to rejoin the workforce is increasingly becoming an important strategy responding to the demands of an aging society and boosting labor force participation. The enactment of the Employment Act for the Middle-Aged and the Elderly in Taiwan, China, provides a reference for implementing proactive aging policies, developing human resources for the elderly, and promoting re-employment of the elderly. However, the current situation of re-employment of the elderly in China is grim and multifaceted. The main challenges include age discrimination in the labor market entry mechanism, lack of community support, and institutional bottlenecks in promoting re-employment across different departments. Considering the size of population and economic and social development needs in mainland China, it is suggested that the government should take supportive policies and regulations as guidance, and incorporate anti-age discrimination employment into labor laws. Moreover, efforts should be made to enhance the protection of re-employment rights for the elderly, and establish a flexible employment safety net for the low working-age elders; in addition, collaboration among government, enterprises, and social organizations should be strengthened, and the management system for elderly human resources should be enhanced to promote re-employment of the elders and to build age-friendly jobs and workplaces for them.