The invention provides a flow prompting method and device. Present flow using information of a user can be collected, a flow using value and networking condition of the user in a present period can be determined, a flow prompting threshold user is corrected according to the determined flow using value and networking condition of the user in the present period as well as a historical flow using value, which is obtained by counting historical network using conditions of the user, of the user in the present period, and flow prompt is provided for the user on the basis of the corrected flow prompting threshold. Thus, on the basis of historical flow using conditions, present network conditions and the like of the user, the flow prompting threshold of the user can be adjusted dynamically, so that the flow prompting threshold provided for the user approaches the practicality more, and the flow prompting accuracy is improved.