Page watermark tamper-proofing method and system

The invention discloses a page watermark tamper-proofing method and a page watermark tamper-proofing system. The method comprises the steps: detecting the content of a watermark and/or the state of the watermark in a visual field; and when the content of the watermark is changed and/or the state of the watermark in the visual field is changed, redisplaying preset watermark information at a presetposition. According to the method, the problems that in the prior art, a page watermark does not have a tamper-proof function, a user who slightly understands a point technology can dynamically modifythe DOM through a browser developer tool, the watermark can be hidden, and the effect of guaranteeing the rights and interests of the user cannot be achieved are solved. 本发明公开了一种页面水印防篡改方法和系统，其中，所述方法包括：检测所述水印的内容和/或所述水印在视野中的状态；以及当所述水印的内容发生变动和/或所述水印在视野中的状态发生变动时，在预设位置重新展示预设的水印信息。该方法克服现有技术中的页面水印并不具有的防篡改功能，稍微懂点技术的用户可以通过浏览器开发者工具来动态修改DOM，即可隐藏水印，无法起到保证用户权益的作用的问题。