Two-dimensional code display and processing method, data processing method, system and device

The invention discloses a two-dimensional code display and processing method and a data processing method, system and device. The method provided by the invention comprises the following steps: the user terminal scans the two-dimensional code displayed by the merchant and acquires the merchant sanitation information of the merchant through the cloud server system; therefore, the user can know thehealth execution condition committed by the merchant before consumption so as to eliminate the worry of the user or the merchant for realizing commercial transaction, and the user can conveniently andquickly select an offline store or merchant meeting the health standard; in addition, the merchant terminal checks the health condition of the user who has scanned the two-dimensional code through the cloud server system, thereby facilitating the merchant to make a reference basis or a decision basis for judging whether to provide shop consumption or visit service for the user. 本申请公开一种二维码展示及处理方法、数据处理方法、系统及装置，本申请所提供的方法包括：用