As population aging process accelerates in China, home-based care and community-based care for the elderly have gradually become the mainstream way of providing care for the elderly, and the proportion of entertainment services in services for the elderly has gradually increased. In the post-COVID-19 era, entertainment needs to reduce the gathering of people. Therefore, the entertainment methods will undergo great changes. There will be many design opportunities for corresponding service design. This work sorted out the new opportunities that may arise from entertainment for the elderly in the post-COVID-19 era, and listed two service design practice cases to explore the ways of entertainment services for the elderly in the post-COVID-19 era. Through the design thinking method, the opportunities of entertainment for the elderly in the post-COVID-19 era were systematically sorted out. And through field observations and in-depth interviews with major stakeholders, two design systems of entertainment services for the elderly were constructed in combination with several service design tools such as empathy map and user journey map. In the post-COVID-19 era, design of entertainment services for the elderly has abundant opportunities, and we need designers to use design thinking methods to develop more and better entertainment services for the elderly.