Black Dog Research Center is an electronic game designed for those who usually accompany patients suffering from depression. As former Prime Minister Churchill once said "the anxiety in my mind is like a black dog, once it has a chance it will bite me and never let go." We transform the anxiety and depression of the patient into a black dog, and through simulation games, teach the player to learn how to accompany and interact with depression patients. Leading animation allows individuals accompanying depression patients to know about the Black Dog Research Center and count on the Black Dog Research Center; the "record your mood function" combines with a color mind, which will present a suitable color as the theme to adjust the mood for the day according to the answers given, and if the mood is negative for an extended period of time, the Black Dog research Center will remind the player to take care of him or herself. The design of the daily tasks helps to build on a habit of taking care of oneself; the research notes collect important information about the interaction the player has with the game character. Finally it understands that the most important thing for individuals accompanying depression patients is to always "leave a little space for their ownself."