In the face of the aging trend in China, the social problems arising from it are beginning to emerge. In order to relieve the pressure of aging, the design concept of horticulture therapy is proposed, aiming to improve the psychological and physical health of the elderly through the combination of environment and design to achieve the effect of recuperation. The Covid-19 epidemic has brought shocks to the lives of the elderly, so it is important to pay attention to their physical health and psychological health, and the model of elderly care before and after the epidemic is also worth studying.