The present technology relates to an information processing device and an information processing method, in which Synecoculture (registered trademark) can be assisted.An ecosystem object indicating an ecosystem constituent configuring an ecosystem of an agricultural field in which a plurality of types of vegetation are mixed up and a task object indicating a task performed with respect to the ecosystem constituent are acquired, and the ecosystem object is subjected to augmented reality (AR) display in a position in a predetermined background space, corresponding to a real position of the ecosystem constituent, and the task object is subjected to AR display in the background space. The present technology, for example, can be applied to a case or the like where information of assisting Synecoculture (registered trademark) is provided.