A mobile target coating device, comprising: a target source; a target source carrier section configured to carry and drive the target source to move; an infrared temperature detecting section, connected to the target source carrier section and configured to detect a temperature of a surface of the target source; an infrared heating section, connected to the target source carrier section, configured to heat the target source, and comprising an infrared heating radiating sheet; and a control section, in signal communication with the infrared temperature detecting section and the infrared heating section, and configured to receive a detection signal of the infrared temperature detecting section and determine whether the temperature of the surface of the target source is uniform or not, and comprising an actuation section, the actuation section comprising a rotating motor, and the infrared heating radiating sheet being connected with the rotating motor, wherein the control section further comprises a signal connecting portion and a signal processing section and is further configured to, during the infrared heating section heats the target source, determine whether a temperature of a portion of the surface of the target source is lower than a temperature of other portions of the surface of the target source and a temperature difference value exceeds a pre-set value, issue an instruction to the actuation section by means of the signal processing section such that the rotating motor controls the infrared heating radiating sheet connected therewith to turn on, control the infrared heating radiating sheet to heat the surface of the target source at the portion having the lower temperature until the temperature of the surface of the target source becomes uniform, and stop heating after the temperature of the surface of the target source becomes uniform; the infrared temperature detecting section and the infrared heating section can move in synchronism with the target source carrier section; the infrared temperature detecting section is located between the surface of the target source and a surface of the infrared heating section; the surface of the target source is composed of a plurality of discrete sub-target sources; and the plurality of discrete sub-target sources are arranged in an annular arrangement. a target source; a target source carrier section configured to carry and drive the target source to move; an infrared temperature detecting section, connected to the target source carrier section and configured to detect a temperature of a surface of the target source; an infrared heating section, connected to the target source carrier section, configured to heat the target source, and comprising an infrared heating radiating sheet; and a control section, in signal communication with the infrared temperature detecting section and the infrared heating section, and configured to receive a detection signal of the infrared temperature detecting section and determine whether the temperature of the surface of the target source is uniform or not, and comprising an actuation section, the actuation section comprising a rotating motor, and the infrared heating radiating sheet being connected with the rotating motor, wherein the control section further comprises a signal connecting portion and a signal processing section and is further configured to, during the infrared heating section heats the target source, determine whether a temperature of a portion of the surface of the target source is lower than a temperature of other portions of the surface of the target source and a temperature difference value exceeds a pre-set value, issue an instruction to the actuation section by means of the signal processing section such that the rotating motor controls the infrared heating radiating sheet connected therewith to turn on, control the infrared heating radiating sheet to heat the surface of the target source at the portion having the lower temperature until the temperature of the surface of the target source becomes uniform, and stop heating after the temperature of the surface of the target source becomes uniform; the infrared temperature detecting section and the infrared heating section can move in synchronism with the target source carrier section; the infrared temperature detecting section is located between the surface of the target source and a surface of the infrared heating section; the surface of the target source is composed of a plurality of discrete sub-target sources; and the plurality of discrete sub-target sources are arranged in an annular arrangement.