The present disclosure provides an eye-protection mode processing method, device, terminal, and medium in a fingerprint recognition mode. The method can include acquiring eye-protection parameters of each one of current constituent windows in the case of that a mobile terminal is in a fingerprint recognition mode, and, if the eye-protection parameters of the constituent window are preset values and the constituent window is a constituent window corresponding to fingerprint recognition, then setting the eye-protection parameters of the constituent window corresponding to the fingerprint recognition as a value of zero.