The embodiment of the invention discloses a page information interaction method, device and system. The method comprises the following steps: sending page information of a current page to a cloud server while identifying that the current page contains an input point for inputting private information, such that the cloud server judges whether the current page has a fishing risk or not according to the page information; and performing an operation for preventing the fishing risk aiming at the current page while receiving a judging result that the current page has the fishing risk sent by the cloud server. According to the embodiment of the invention, private information of users can be effectively prevented from being leaked.