A method and device for securely displaying data are displayed. The method includes the following. A security display state is entered after an instruction used for starting the security display state is received. A current data packet to be displayed is obtained. If a display address includes a security display address, security data corresponding to the security display address is obtained from current data to be displayed. The security data is securely processed. The security data is displayed at the security display address. A security processing result of the security data is obtained. The security display address is a fixed address.