Enabling machines to communicate like humans is a long-term goal of open-domain dialogue generation. To achieve this goal, more and more studies on dialogue generation focus on the key factor, emotion. The empathetic dialogue system aims to recognize user’s emotion and situation, then generates responses accordingly.Enabling machines to communicate like humans is a long-term goal of open-domain dialogue generation. To achieve this goal, more and more studies on dialogue generation focus on the key factor, emotion. The empathetic dialogue system aims to recognize user’s emotion and situation, then generates responses accordingly.[#item_full_content]