The invention provides a session message processing method and device. The method comprises: according to a target word in a session message inputted by a user, obtaining a set of attributes to be selected corresponding to the session message in a main attribute set, wherein the main attribute set is the set of topic types that satisfy the preset conditions in each domain corresponding to the knowledge map; according to the target word, obtaining the confidence degree of each attribute to be selected belonging to the attribute set to be selected; determining the selected attribute corresponding to the maximum value in the confidence degree as the intention corresponding to the conversation message, the intention being the topic type corresponding to the conversation message; through the preset main attribute set, eliminating the calculation of confidence between the non-main attribute set and the target word. The session message processing method and device can quickly identify the intention of the conversation message, also can make the corresponding attribute of the target word more accurate, are more appropriate to the user's intention, and improve the user experience.