Pets serve as significant emotional companions in modern society, and their loss often leads to profound emotional distress and loneliness for their owners. Traditional memorial methods, such as photographs and burial services, lack interactivity and fail to provide sustained emotional support. This study proposes an intelligent pet memorial system based on affective computing, exploring how reconstructing a beloved pet in a virtual environment can help pet owners cope with grief. By integrating dynamic virtual pet modeling and interactive design, the system offers personalized and long-term emotional comfort. The system is structured around three core modules: multimodal affective computing, virtual pet behavior feedback, and an emotion recovery pathway. To enhance immersive user experiences, an interactive hardware module is introduced, incorporating touch, vibration sensors, and 3D projection technologies to facilitate multi-sensory interaction between users and virtual pets. This system provides an innovative approach to alleviating emotional distress caused by pet loss, with the potential to offer long-term emotional support. Future research will focus on improving the accuracy and responsiveness of affective recognition while expanding the behavioral scenarios and interactive capabilities of virtual pets to further enrich user experiences.