1. A feedback control method, comprising the steps of: providing a feedback control device. The feedback control device is able to be configured with a sensing layer, which detects and gathers the external information and generates a plurality of sensing signals with respect to at least one characteristic on the sensing layer, and the device is able to control a driving layer, which is able to change the surface status of the sensing layer; acquiring the plurality of sensing signals within the first specific time interval to be used for establishing the first prediction model accordingly; using the first prediction model to predict a distribution status with respect to the at least one characteristic on the sending layer at a specific time point after the completing of the first specific time interval; and determining whether to control the driving layer for changing the surface status of the sensing layer according to the distribution status.