Provided are a data processing method for a dialogue system, an apparatus, a device and a medium. The method includes: obtaining a pre-configured task description, wherein the task description comprises at least one task name and at least one task attribute corresponding to a respective task name; extracting, based on a reading comprehension technique, an answer corresponding to the task description from content of a current dialogue with a user; and completing the dialogue with the user according to the answer and a pre-generated dialogue flow.