The invention relates to a classroom LED lamp health illumination light attenuation warning device. Each illumination sensor in the device is connected with a corresponding zigbee wireless transmitting module to be installed in the same corresponding lamp, and the distance between the illumination sensor and the light emitting surface of the lamp is the same as the distance in delivery detection;a control unit is connected with a zigbee wireless receiving module, a liquid crystal display module and an indicating lamp set to be all integrated on a liquid crystal display panel; the actual detection illumination value acquired by the illumination sensor is sent to the control unit in a wireless transmission mode; when the luminous flux maintenance rate eta of the lamp is less than 70%, a corresponding indicator of the liquid crystal display module displays a warning pattern; and when the surface illumination Ea of a desk in the classroom is less than 300 lx, the corresponding indicator lamp is highlighted and displayed. The device can remind a user that the lamp needs to be maintained or replaced when the luminous flux maintaining rate of the lamp is lower than 70% or when the luminance of the desk surface is lower than the minimum illuminance value required by the national standard.